12507507 has 16 divisors (see below), whose sum is σ = 18660000. Its totient is φ = 8279712.

The previous prime is 12507503. The next prime is 12507527. The reversal of 12507507 is 70570521.

It is not a de Polignac number, because 12507507 - 2² = 12507503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12507503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2469 + ... + 5577.

It is an arithmetic number, because the mean of its divisors is an integer number (1166250).

Almost surely, 2^12507507 is an apocalyptic number.

12507507 is a deficient number, since it is larger than the sum of its proper divisors (6152493).

12507507 is a wasteful number, since it uses less digits than its factorization.

12507507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3261 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 12507507 is about 3536.5953967057. The cubic root of 12507507 is about 232.1258915931.

The spelling of 12507507 in words is "twelve million, five hundred seven thousand, five hundred seven".