12512915 has 4 divisors (see below), whose sum is σ = 15015504. Its totient is φ = 10010328.

The previous prime is 12512911. The next prime is 12512939. The reversal of 12512915 is 51921521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12512915 - 2² = 12512911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12512911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251287 + ... + 1251296.

It is an arithmetic number, because the mean of its divisors is an integer number (3753876).

Almost surely, 2^12512915 is an apocalyptic number.

12512915 is a deficient number, since it is larger than the sum of its proper divisors (2502589).

12512915 is an equidigital number, since it uses as much as digits as its factorization.

12512915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502588.

The product of its digits is 900, while the sum is 26.

The square root of 12512915 is about 3537.3598912183. The cubic root of 12512915 is about 232.1593423289.

The spelling of 12512915 in words is "twelve million, five hundred twelve thousand, nine hundred fifteen".