12856625 has 16 divisors (see below), whose sum is σ = 16169088. Its totient is φ = 10206000.

The previous prime is 12856621. The next prime is 12856639. The reversal of 12856625 is 52665821.

It is not a de Polignac number, because 12856625 - 2² = 12856621 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20060 + ... + 20690.

It is an arithmetic number, because the mean of its divisors is an integer number (1010568).

Almost surely, 2^12856625 is an apocalyptic number.

It is an amenable number.

12856625 is a deficient number, since it is larger than the sum of its proper divisors (3312463).

12856625 is an equidigital number, since it uses as much as digits as its factorization.

12856625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809 (or 799 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 12856625 is about 3585.6136155476. The cubic root of 12856625 is about 234.2658543653.

The spelling of 12856625 in words is "twelve million, eight hundred fifty-six thousand, six hundred twenty-five".