12638812501325 has 24 divisors (see below), whose sum is σ = 16245369277440. Its totient is φ = 9743946004800.

The previous prime is 12638812501291. The next prime is 12638812501349. The reversal of 12638812501325 is 52310521883621.

It is not a de Polignac number, because 12638812501325 - 2¹⁶ = 12638812435789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12638812501325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33932234 + ... + 34302683.

It is an arithmetic number, because the mean of its divisors is an integer number (676890386560).

Almost surely, 2^{12638812501325} is an apocalyptic number.

It is an amenable number.

12638812501325 is a deficient number, since it is larger than the sum of its proper divisors (3606556776115).

12638812501325 is a wasteful number, since it uses less digits than its factorization.

12638812501325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68235197 (or 68235192 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 12638812501325 in words is "twelve trillion, six hundred thirty-eight billion, eight hundred twelve million, five hundred one thousand, three hundred twenty-five".