12522515 has 4 divisors (see below), whose sum is σ = 15027024. Its totient is φ = 10018008.

The previous prime is 12522487. The next prime is 12522529. The reversal of 12522515 is 51522521.

12522515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51522521 = 349 ⋅147629.

It is a cyclic number.

It is not a de Polignac number, because 12522515 - 2²⁰ = 11473939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252247 + ... + 1252256.

It is an arithmetic number, because the mean of its divisors is an integer number (3756756).

Almost surely, 2^12522515 is an apocalyptic number.

12522515 is a deficient number, since it is larger than the sum of its proper divisors (2504509).

12522515 is an equidigital number, since it uses as much as digits as its factorization.

12522515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504508.

The product of its digits is 1000, while the sum is 23.

The square root of 12522515 is about 3538.7165752572. The cubic root of 12522515 is about 232.2186986010.

The spelling of 12522515 in words is "twelve million, five hundred twenty-two thousand, five hundred fifteen".