22521345255 has 24 divisors (see below), whose sum is σ = 41333293872. Its totient is φ = 11304831744.

The previous prime is 22521345199. The next prime is 22521345283. The reversal of 22521345255 is 55254312522.

22521345255 is a `hidden beast` number, since 2 + 2 + 521 + 34 + 52 + 55 = 666.

It is not a de Polignac number, because 22521345255 - 2⁶ = 22521345191 is a prime.

It is a super-2 number, since 2×22521345255² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14719069 + ... + 14720598.

It is an arithmetic number, because the mean of its divisors is an integer number (1722220578).

Almost surely, 2^22521345255 is an apocalyptic number.

22521345255 is a deficient number, since it is larger than the sum of its proper divisors (18811948617).

22521345255 is a wasteful number, since it uses less digits than its factorization.

22521345255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29439695 (or 29439692 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

Adding to 22521345255 its reverse (55254312522), we get a palindrome (77775657777).

The spelling of 22521345255 in words is "twenty-two billion, five hundred twenty-one million, three hundred forty-five thousand, two hundred fifty-five".