12739625 has 8 divisors (see below), whose sum is σ = 15899208. Its totient is φ = 10191600.

The previous prime is 12739603. The next prime is 12739637. The reversal of 12739625 is 52693721.

It can be written as a sum of positive squares in 4 ways, for example, as 151321 + 12588304 = 389^2 + 3548^2 .

It is not a de Polignac number, because 12739625 - 2²⁰ = 11691049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50834 + ... + 51083.

It is an arithmetic number, because the mean of its divisors is an integer number (1987401).

Almost surely, 2^12739625 is an apocalyptic number.

It is an amenable number.

12739625 is a deficient number, since it is larger than the sum of its proper divisors (3159583).

12739625 is an equidigital number, since it uses as much as digits as its factorization.

12739625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101932 (or 101922 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 12739625 is about 3569.2611280208. The cubic root of 12739625 is about 233.5530526726.

The spelling of 12739625 in words is "twelve million, seven hundred thirty-nine thousand, six hundred twenty-five".