Nearby Numbers

Positive, nonzero integers within three units

21022

Twenty-One Thousand and Twenty-Two

21023

Twenty-One Thousand and Twenty-Three

21024

Twenty-One Thousand and Twenty-Four

21026

Twenty-One Thousand and Twenty-Six

21027

Twenty-One Thousand and Twenty-Seven

21028

Twenty-One Thousand and Twenty-Eight

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

2.1025e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00004756242568370987

The reciprocal of 21025.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 21025 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Twenty-one thousand and twenty-five is a composite number with 9 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

Twenty-one thousand and twenty-five is a composite number with 9 total factors (including 1 and itself).

Prime Factors

5

Five

29

Twenty-Nine

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

52 · 292 = 21025

Base Conversions

The number twenty-one thousand and twenty-five in 35 different bases