22565521456 has 20 divisors (see below), whose sum is σ = 46021787800. Its totient is φ = 10688931072.

The previous prime is 22565521453. The next prime is 22565521529. The reversal of 22565521456 is 65412556522.

It is not an unprimeable number, because it can be changed into a prime (22565521453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37114041 + ... + 37114648.

It is an arithmetic number, because the mean of its divisors is an integer number (2301089390).

Almost surely, 2^22565521456 is an apocalyptic number.

It is an amenable number.

22565521456 is an abundant number, since it is smaller than the sum of its proper divisors (23456266344).

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

22565521456 is a wasteful number, since it uses less digits than its factorization.

22565521456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74228716 (or 74228710 counting only the distinct ones).

The product of its digits is 720000, while the sum is 43.

The spelling of 22565521456 in words is "twenty-two billion, five hundred sixty-five million, five hundred twenty-one thousand, four hundred fifty-six".