12505904 has 10 divisors (see below), whose sum is σ = 24230220. Its totient is φ = 6252944.

The previous prime is 12505903. The next prime is 12505939. The reversal of 12505904 is 40950521.

It is not an unprimeable number, because it can be changed into a prime (12505903) by changing a digit.

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 as a sum of consecutive naturals, namely, 390794 + ... + 390825.

It is an arithmetic number, because the mean of its divisors is an integer number (2423022).

Almost surely, 2^12505904 is an apocalyptic number.

It is an amenable number.

12505904 is a deficient number, since it is larger than the sum of its proper divisors (11724316).

12505904 is an equidigital number, since it uses as much as digits as its factorization.

12505904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781627 (or 781621 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 12505904 is about 3536.3687590521. The cubic root of 12505904 is about 232.1159745168.

The spelling of 12505904 in words is "twelve million, five hundred five thousand, nine hundred four".