12638775025 has 12 divisors (see below), whose sum is σ = 15673516672. Its totient is φ = 10110093840.

The previous prime is 12638774999. The next prime is 12638775073. The reversal of 12638775025 is 52057783621.

It is a de Polignac number, because none of the positive numbers 2^k-12638775025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426232 + ... + 454918.

Almost surely, 2^12638775025 is an apocalyptic number.

It is an amenable number.

12638775025 is a deficient number, since it is larger than the sum of its proper divisors (3034741647).

12638775025 is a wasteful number, since it uses less digits than its factorization.

12638775025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46320 (or 46315 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 12638775025 in words is "twelve billion, six hundred thirty-eight million, seven hundred seventy-five thousand, twenty-five".