12397625 has 8 divisors (see below), whose sum is σ = 15472392. Its totient is φ = 9918000.

The previous prime is 12397597. The next prime is 12397639. The reversal of 12397625 is 52679321.

It can be written as a sum of positive squares in 4 ways, for example, as 817216 + 11580409 = 904^2 + 3403^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12397625 is a prime.

It is a super-2 number, since 2×12397625² = 307402211281250, which contains 22 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 49466 + ... + 49715.

It is an arithmetic number, because the mean of its divisors is an integer number (1934049).

Almost surely, 2^12397625 is an apocalyptic number.

It is an amenable number.

12397625 is a deficient number, since it is larger than the sum of its proper divisors (3074767).

12397625 is an frugal number, since it uses more digits than its factorization.

12397625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99196 (or 99186 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 12397625 is about 3521.0261288437. The cubic root of 12397625 is about 231.4441272268. Note that the first 3 decimals are identical.

The spelling of 12397625 in words is "twelve million, three hundred ninety-seven thousand, six hundred twenty-five".