12625389 has 30 divisors (see below), whose sum is σ = 21946254. Its totient is φ = 7212240.

The previous prime is 12625363. The next prime is 12625391. The reversal of 12625389 is 98352621.

12625389 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 4588164 = 2835^2 + 2142^2 .

It is not a de Polignac number, because 12625389 - 2⁸ = 12625133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12625309) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2379 + ... + 5559.

Almost surely, 2^12625389 is an apocalyptic number.

It is an amenable number.

12625389 is a deficient number, since it is larger than the sum of its proper divisors (9320865).

12625389 is an equidigital number, since it uses as much as digits as its factorization.

12625389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207 (or 3191 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 12625389 is about 3553.2223403553. Note that the first 3 decimals coincide. The cubic root of 12625389 is about 232.8528668860.

The spelling of 12625389 in words is "twelve million, six hundred twenty-five thousand, three hundred eighty-nine".