12397525 has 12 divisors (see below), whose sum is σ = 17569312. Its totient is φ = 8501040.

The previous prime is 12397513. The next prime is 12397537. The reversal of 12397525 is 52579321.

It is an interprime number because it is at equal distance from previous prime (12397513) and next prime (12397537).

It is not a de Polignac number, because 12397525 - 2⁷ = 12397397 is a prime.

It is a super-2 number, since 2×12397525² = 307397252251250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35247 + ... + 35596.

Almost surely, 2^12397525 is an apocalyptic number.

It is an amenable number.

12397525 is a deficient number, since it is larger than the sum of its proper divisors (5171787).

12397525 is an equidigital number, since it uses as much as digits as its factorization.

12397525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70860 (or 70855 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 12397525 is about 3521.0119284092. The cubic root of 12397525 is about 231.4435049443.

The spelling of 12397525 in words is "twelve million, three hundred ninety-seven thousand, five hundred twenty-five".