22506549975 has 192 divisors, whose sum is σ = 51293383680. Its totient is φ = 9421401600.

The previous prime is 22506549943. The next prime is 22506550009. The reversal of 22506549975 is 57994560522.

22506549975 is a `hidden beast` number, since 2 + 2 + 5 + 0 + 6 + 549 + 97 + 5 = 666.

It is not a de Polignac number, because 22506549975 - 2⁵ = 22506549943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8045277 + ... + 8048073.

It is an arithmetic number, because the mean of its divisors is an integer number (267153040).

Almost surely, 2^22506549975 is an apocalyptic number.

22506549975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22506549975 is an abundant number, since it is smaller than the sum of its proper divisors (28786833705).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22506549975 is a wasteful number, since it uses less digits than its factorization.

22506549975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967 (or 2956 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 54.

The spelling of 22506549975 in words is "twenty-two billion, five hundred six million, five hundred forty-nine thousand, nine hundred seventy-five".