12817725 has 48 divisors (see below), whose sum is σ = 22617600. Its totient is φ = 6393600.

The previous prime is 12817697. The next prime is 12817733. The reversal of 12817725 is 52771821.

12817725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12817725 - 2⁶ = 12817661 is a prime.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 85951 + ... + 86099.

It is an arithmetic number, because the mean of its divisors is an integer number (471200).

Almost surely, 2^12817725 is an apocalyptic number.

12817725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12817725 is a deficient number, since it is larger than the sum of its proper divisors (9799875).

12817725 is a wasteful number, since it uses less digits than its factorization.

12817725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 225 counting only the distinct ones).

The product of its digits is 7840, while the sum is 33.

The square root of 12817725 is about 3580.1850510833. The cubic root of 12817725 is about 234.0293447018.

The spelling of 12817725 in words is "twelve million, eight hundred seventeen thousand, seven hundred twenty-five".