12501512515 has 4 divisors (see below), whose sum is σ = 15001815024. Its totient is φ = 10001210008.

The previous prime is 12501512503. The next prime is 12501512561. The reversal of 12501512515 is 51521510521.

12501512515 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.

It is a cyclic number.

It is not a de Polignac number, because 12501512515 - 2²⁹ = 11964641603 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250151247 + ... + 1250151256.

It is an arithmetic number, because the mean of its divisors is an integer number (3750453756).

Almost surely, 2^12501512515 is an apocalyptic number.

12501512515 is a deficient number, since it is larger than the sum of its proper divisors (2500302509).

12501512515 is an equidigital number, since it uses as much as digits as its factorization.

12501512515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500302508.

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 12501512515 in words is "twelve billion, five hundred one million, five hundred twelve thousand, five hundred fifteen".