12638615125 has 16 divisors (see below), whose sum is σ = 15778256832. Its totient is φ = 10107517200.

The previous prime is 12638615113. The next prime is 12638615137. The reversal of 12638615125 is 52151683621.

It is an interprime number because it is at equal distance from previous prime (12638615113) and next prime (12638615137).

It is not a de Polignac number, because 12638615125 - 2²⁷ = 12504397397 is a prime.

It is a super-3 number, since 3×12638615125³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400162 + ... + 430588.

It is an arithmetic number, because the mean of its divisors is an integer number (986141052).

Almost surely, 2^12638615125 is an apocalyptic number.

It is an amenable number.

12638615125 is a deficient number, since it is larger than the sum of its proper divisors (3139641707).

12638615125 is an equidigital number, since it uses as much as digits as its factorization.

12638615125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33765 (or 33755 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The spelling of 12638615125 in words is "twelve billion, six hundred thirty-eight million, six hundred fifteen thousand, one hundred twenty-five".