12939225 has 48 divisors (see below), whose sum is σ = 24081792. Its totient is φ = 6082560.

The previous prime is 12939217. The next prime is 12939257. The reversal of 12939225 is 52293921.

It is not a de Polignac number, because 12939225 - 2³ = 12939217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22137 + ... + 22713.

It is an arithmetic number, because the mean of its divisors is an integer number (501704).

Almost surely, 2^12939225 is an apocalyptic number.

12939225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12939225 is a deficient number, since it is larger than the sum of its proper divisors (11142567).

12939225 is a wasteful number, since it uses less digits than its factorization.

12939225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 621 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 12939225 is about 3597.1134260682. The cubic root of 12939225 is about 234.7664799635.

The spelling of 12939225 in words is "twelve million, nine hundred thirty-nine thousand, two hundred twenty-five".