12664415125 has 16 divisors (see below), whose sum is σ = 15874852032. Its totient is φ = 10086877200.

The previous prime is 12664415063. The next prime is 12664415171. The reversal of 12664415125 is 52151446621.

It is a de Polignac number, because none of the positive numbers 2^k-12664415125 is a prime.

It is a Duffinian number.

It is a congruent 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, 194787 + ... + 251536.

It is an arithmetic number, because the mean of its divisors is an integer number (992178252).

Almost surely, 2^12664415125 is an apocalyptic number.

It is an amenable number.

12664415125 is a deficient number, since it is larger than the sum of its proper divisors (3210436907).

12664415125 is an equidigital number, since it uses as much as digits as its factorization.

12664415125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446565 (or 446555 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The spelling of 12664415125 in words is "twelve billion, six hundred sixty-four million, four hundred fifteen thousand, one hundred twenty-five".