12508815 has 32 divisors (see below), whose sum is σ = 22311936. Its totient is φ = 5932160.

The previous prime is 12508789. The next prime is 12508817. The reversal of 12508815 is 51880521.

It is not a de Polignac number, because 12508815 - 2⁶ = 12508751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12508817) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6949 + ... + 8561.

It is an arithmetic number, because the mean of its divisors is an integer number (697248).

Almost surely, 2^12508815 is an apocalyptic number.

12508815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12508815 is a deficient number, since it is larger than the sum of its proper divisors (9803121).

12508815 is a wasteful number, since it uses less digits than its factorization.

12508815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 12508815 is about 3536.7803154847. The cubic root of 12508815 is about 232.1339830026.

The spelling of 12508815 in words is "twelve million, five hundred eight thousand, eight hundred fifteen".