12906722025 has 72 divisors (see below), whose sum is σ = 24029503680. Its totient is φ = 6616494720.

The previous prime is 12906722009. The next prime is 12906722039. The reversal of 12906722025 is 52022760921.

It is a happy number.

It is not a de Polignac number, because 12906722025 - 2⁴ = 12906722009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 681636 + ... + 700314.

Almost surely, 2^12906722025 is an apocalyptic number.

12906722025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12906722025 is a deficient number, since it is larger than the sum of its proper divisors (11122781655).

12906722025 is a wasteful number, since it uses less digits than its factorization.

12906722025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18815 (or 18807 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 12906722025 in words is "twelve billion, nine hundred six million, seven hundred twenty-two thousand, twenty-five".