12516279125 has 32 divisors (see below), whose sum is σ = 17941747200. Its totient is φ = 8539344000.

The previous prime is 12516279103. The next prime is 12516279143. The reversal of 12516279125 is 52197261521.

It is not a de Polignac number, because 12516279125 - 2⁸ = 12516278869 is a prime.

It is a congruent number.

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, 138185 + ... + 210065.

It is an arithmetic number, because the mean of its divisors is an integer number (560679600).

Almost surely, 2^12516279125 is an apocalyptic number.

It is an amenable number.

12516279125 is a deficient number, since it is larger than the sum of its proper divisors (5425468075).

12516279125 is an equidigital number, since it uses as much as digits as its factorization.

12516279125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72102 (or 72092 counting only the distinct ones).

The product of its digits is 75600, while the sum is 41.

The spelling of 12516279125 in words is "twelve billion, five hundred sixteen million, two hundred seventy-nine thousand, one hundred twenty-five".