12636616025 has 24 divisors (see below), whose sum is σ = 17645323008. Its totient is φ = 8893800000.

The previous prime is 12636616019. The next prime is 12636616051. The reversal of 12636616025 is 52061663621.

It is a happy number.

It is not a de Polignac number, because 12636616025 - 2⁴ = 12636616009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12636616025.

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 23 ways as a sum of consecutive naturals, for example, 732626 + ... + 749675.

It is an arithmetic number, because the mean of its divisors is an integer number (735221792).

Almost surely, 2^12636616025 is an apocalyptic number.

It is an amenable number.

12636616025 is a deficient number, since it is larger than the sum of its proper divisors (5008706983).

12636616025 is a wasteful number, since it uses less digits than its factorization.

12636616025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482353 (or 1482348 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 12636616025 in words is "twelve billion, six hundred thirty-six million, six hundred sixteen thousand, twenty-five".