12501921712625 has 16 divisors (see below), whose sum is σ = 15603935098752. Its totient is φ = 10000552241200.

The previous prime is 12501921712603. The next prime is 12501921712667. The reversal of 12501921712625 is 52621712910521.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12501921712625 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3650189 + ... + 6190938.

It is an arithmetic number, because the mean of its divisors is an integer number (975245943672).

Almost surely, 2^{12501921712625} is an apocalyptic number.

It is an amenable number.

12501921712625 is a deficient number, since it is larger than the sum of its proper divisors (3102013386127).

12501921712625 is an equidigital number, since it uses as much as digits as its factorization.

12501921712625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9851305 (or 9851295 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 12501921712625 in words is "twelve trillion, five hundred one billion, nine hundred twenty-one million, seven hundred twelve thousand, six hundred twenty-five".