12438625 has 16 divisors (see below), whose sum is σ = 15649920. Its totient is φ = 9870000.

The previous prime is 12438599. The next prime is 12438631. The reversal of 12438625 is 52683421.

It is not a de Polignac number, because 12438625 - 2⁷ = 12438497 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18546 + ... + 19204.

It is an arithmetic number, because the mean of its divisors is an integer number (978120).

Almost surely, 2^12438625 is an apocalyptic number.

It is an amenable number.

12438625 is a deficient number, since it is larger than the sum of its proper divisors (3211295).

12438625 is an equidigital number, since it uses as much as digits as its factorization.

12438625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 815 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 12438625 is about 3526.8434895810. The cubic root of 12438625 is about 231.6989816270.

The spelling of 12438625 in words is "twelve million, four hundred thirty-eight thousand, six hundred twenty-five".