12138795025 has 12 divisors (see below), whose sum is σ = 17202406912. Its totient is φ = 8323745040.

The previous prime is 12138794981. The next prime is 12138795041. The reversal of 12138795025 is 52059783121.

It is a happy number.

It is not a de Polignac number, because 12138795025 - 2⁷ = 12138794897 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, 34682097 + ... + 34682446.

Almost surely, 2^12138795025 is an apocalyptic number.

It is an amenable number.

12138795025 is a deficient number, since it is larger than the sum of its proper divisors (5063611887).

12138795025 is an equidigital number, since it uses as much as digits as its factorization.

12138795025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69364560 (or 69364555 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 12138795025 in words is "twelve billion, one hundred thirty-eight million, seven hundred ninety-five thousand, twenty-five".