## Why 25 is a special number

It is the smallest square that is also a sum of two (non-zero) squares: 25 = 32 + 42.

Hence it often appears in illustrations of the Pythagorean theorem.

25 is the sum of the single-digit odd natural numbers 1, 3, 5, 7 and 9, the first five odd natural numbers.

…

It is also a Cullen number..

## Is 1089 a special number

1089 is the integer after 1088 and before 1090. It is a square number (33 squared), a nonagonal number, a 32-gonal number, a 364-gonal number, and a centered octagonal number. 1089 is the first reverse-divisible number….1089 (number)← 1088 1089 1090 →Ternary11111003Octal21018Duodecimal76912Hexadecimal441168 more rows

## Is 59 a special number

A special two-digit number is such that when the sum of its digits is added to the product of its digits, the result is equal to the original two-digit number. Example: Consider the number 59. … Add the sum of its digits to the product of its digits.

## Is 5 a special number

It is also the only number that is part of more than one pair of twin primes. Five is also a super-prime, and a congruent number. Five is conjectured to be the only odd untouchable number and if this is the case then five will be the only odd prime number that is not the base of an aliquot tree.

## How do you find special numbers

A different special number could be to add twice the tens digit to the units digit, then add this to the product of the digits and this gives back to the original number. So you know the the second digit in the two digit number will always be 8.

## What does 777 Angel number mean

Seeing angel number 777 means you are in energetic alignment with the Universe and are in a perfect vibrational match to brining in blessings, miracles, good luck, happiness, abundance, great opportunities, and a sign of your dreams coming true!

## Is 407 a narcissistic number

For example, 4150 is a 4-digit number which is the sum of fifth powers of its digits. Since the number of digits is not equal to the power to which they are taken for such numbers, they are not narcissistic numbers….Narcissistic Number.base-10 -narcissistic numbers3153, 370, 371, 40741634, 8208, 9474554748, 92727, 93084654883425 more rows

## Why is the number 69 banned

No NBA player has ever worn the number 69, which is believed to be implicitly banned due to its sexual connotations; the NBA has never confirmed this. … At present, players are allowed any numbers from 1 to 99, additionally 0 and 00.

## Is there a 666 in pi

666 = 16 – 26 + 36. It is also equal to the sum of its digits plus the cubes of its digits: … The sum of the first 144 (= (6+6)·(6+6)) digits of pi is 666.

## What are special numbers

A special two-digit number is a number such that when the sum of the digits of the number is added to the product of its digits, the result is equal to the original two-digit number.

## What is a special number example

Special Numbers in Java are ones whose sum of factorials of digits is equal to the number itself. … One such example of a number is 145. 145= 1! +4!

## What is the most special number

The number 6174 is a really mysterious number. At first glance, it might not seem so obvious. But as we are about to see, anyone who can subtract can uncover the mystery that makes 6174 so special….Two digits, five digits, six and beyond…DigitsKernel2None3495461745None5 more rows•Mar 1, 2006

## Why 2 is a special number

The number 2 is called the “oddest” even prime number. 2 is a unique even prime number because all even numbers are divisible by 2. But any number apart from 2 that is divisible by 2 is not a prime number.

## Is 3 a special number

Three is the smallest number we need to create a pattern, the perfect combination of brevity and rhythm. It’s a principle captured neatly in the Latin phrase omne trium perfectum: everything that comes in threes is perfect, or, every set of three is complete.

## Is 2 an unlucky number

Even numbers The number 0 is a whole number as well as an even one, especially for money, and is thus considered a lucky digit. 2 (两), pronounced er or liang, is considered to be lucky as the Chinese believe that all good things come in pairs. This is observed in repeated characters in some brand names or gifts.

## Why is 1 considered a special number

The number one has only one factor, so it is not a prime number. We move to number two which is a prime number. Strike every second number after the number two (or multiple of two). Move to the next prime number.

## Why 6 is a special number

Six is the second smallest composite number; its proper divisors are 1, 2 and 3. … 6 is the only even perfect number that is not the sum of successive odd cubes. 6 is the root of the 6-aliquot tree, and is itself the aliquot sum of only one number; the square number, 25.

## Why is 28 the perfect number

A number is perfect if all of its factors, including 1 but excluding itself, perfectly add up to the number you began with. 6, for example, is perfect, because its factors — 3, 2, and 1 — all sum up to 6. 28 is perfect too: 14, 7, 4, 2, and 1 add up to 28.