12257515 has 8 divisors (see below), whose sum is σ = 14852448. Its totient is φ = 9710400.

The previous prime is 12257507. The next prime is 12257521. The reversal of 12257515 is 51575221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12257515 - 2³ = 12257507 is a prime.

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, 11386 + ... + 12415.

It is an arithmetic number, because the mean of its divisors is an integer number (1856556).

Almost surely, 2^12257515 is an apocalyptic number.

12257515 is a deficient number, since it is larger than the sum of its proper divisors (2594933).

12257515 is a wasteful number, since it uses less digits than its factorization.

12257515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23909.

The product of its digits is 3500, while the sum is 28.

The square root of 12257515 is about 3501.0734068283. The cubic root of 12257515 is about 230.5689443255.

The spelling of 12257515 in words is "twelve million, two hundred fifty-seven thousand, five hundred fifteen".