12889925 has 6 divisors (see below), whose sum is σ = 15983538. Its totient is φ = 10311920.

The previous prime is 12889909. The next prime is 12889939. The reversal of 12889925 is 52998821.

12889925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2540836 + 10349089 = 1594^2 + 3217^2 .

It is not a de Polignac number, because 12889925 - 2⁴ = 12889909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 257774 + ... + 257823.

It is an arithmetic number, because the mean of its divisors is an integer number (2663923).

Almost surely, 2^12889925 is an apocalyptic number.

It is an amenable number.

12889925 is a deficient number, since it is larger than the sum of its proper divisors (3093613).

12889925 is an equidigital number, since it uses as much as digits as its factorization.

12889925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515607 (or 515602 counting only the distinct ones).

The product of its digits is 103680, while the sum is 44.

The square root of 12889925 is about 3590.2541692755. The cubic root of 12889925 is about 234.4679376607.

The spelling of 12889925 in words is "twelve million, eight hundred eighty-nine thousand, nine hundred twenty-five".