12638750137625 has 32 divisors (see below), whose sum is σ = 15919522887840. Its totient is φ = 10017197164800.

The previous prime is 12638750137591. The next prime is 12638750137679. The reversal of 12638750137625 is 52673105783621.

It can be written as a sum of positive squares in 16 ways, for example, as 12193135145689 + 445614991936 = 3491867^2 + 667544^2 .

It is not a de Polignac number, because 12638750137625 - 2⁶ = 12638750137561 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147611327 + ... + 147696923.

It is an arithmetic number, because the mean of its divisors is an integer number (497485090245).

Almost surely, 2^{12638750137625} is an apocalyptic number.

It is an amenable number.

12638750137625 is a deficient number, since it is larger than the sum of its proper divisors (3280772750215).

12638750137625 is a wasteful number, since it uses less digits than its factorization.

12638750137625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96558 (or 96548 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 56.

The spelling of 12638750137625 in words is "twelve trillion, six hundred thirty-eight billion, seven hundred fifty million, one hundred thirty-seven thousand, six hundred twenty-five".