12731222625 has 64 divisors (see below), whose sum is σ = 23674629888. Its totient is φ = 6022080000.

The previous prime is 12731222611. The next prime is 12731222629. The reversal of 12731222625 is 52622213721.

It is not a de Polignac number, because 12731222625 - 2⁹ = 12731222113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12731222629) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 131487 + ... + 206763.

It is an arithmetic number, because the mean of its divisors is an integer number (369916092).

Almost surely, 2^12731222625 is an apocalyptic number.

12731222625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12731222625 is a deficient number, since it is larger than the sum of its proper divisors (10943407263).

12731222625 is a wasteful number, since it uses less digits than its factorization.

12731222625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75347 (or 75337 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The spelling of 12731222625 in words is "twelve billion, seven hundred thirty-one million, two hundred twenty-two thousand, six hundred twenty-five".