12664336425 has 24 divisors (see below), whose sum is σ = 22549015104. Its totient is φ = 6234749760.

The previous prime is 12664336417. The next prime is 12664336483. The reversal of 12664336425 is 52463346621.

It is a happy number.

12664336425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12664336425 - 2³ = 12664336417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6493557 + ... + 6495506.

It is an arithmetic number, because the mean of its divisors is an integer number (939542296).

Almost surely, 2^12664336425 is an apocalyptic number.

12664336425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12664336425 is a deficient number, since it is larger than the sum of its proper divisors (9884678679).

12664336425 is a wasteful number, since it uses less digits than its factorization.

12664336425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12989089 (or 12989084 counting only the distinct ones).

The product of its digits is 622080, while the sum is 42.

The spelling of 12664336425 in words is "twelve billion, six hundred sixty-four million, three hundred thirty-six thousand, four hundred twenty-five".