22557507650 has 12 divisors (see below), whose sum is σ = 41956964322. Its totient is φ = 9023003040.

The previous prime is 22557507607. The next prime is 22557507659. The reversal of 22557507650 is 5670575522.

It can be written as a sum of positive squares in 3 ways, for example, as 20335045201 + 2222462449 = 142601^2 + 47143^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22557507659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 225575027 + ... + 225575126.

Almost surely, 2^22557507650 is an apocalyptic number.

22557507650 is a deficient number, since it is larger than the sum of its proper divisors (19399456672).

22557507650 is a wasteful number, since it uses less digits than its factorization.

22557507650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451150165 (or 451150160 counting only the distinct ones).

The product of its (nonzero) digits is 735000, while the sum is 44.

The spelling of 22557507650 in words is "twenty-two billion, five hundred fifty-seven million, five hundred seven thousand, six hundred fifty".