12256575172 has 12 divisors (see below), whose sum is σ = 21591054016. Its totient is φ = 6087702600.

The previous prime is 12256575161. The next prime is 12256575197. The reversal of 12256575172 is 27157565221.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10145568 + ... + 10146775.

Almost surely, 2^12256575172 is an apocalyptic number.

It is an amenable number.

12256575172 is a deficient number, since it is larger than the sum of its proper divisors (9334478844).

12256575172 is a wasteful number, since it uses less digits than its factorization.

12256575172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20292498 (or 20292496 counting only the distinct ones).

The product of its digits is 294000, while the sum is 43.

The spelling of 12256575172 in words is "twelve billion, two hundred fifty-six million, five hundred seventy-five thousand, one hundred seventy-two".