12668525 has 12 divisors (see below), whose sum is σ = 15856500. Its totient is φ = 10039680.

The previous prime is 12668507. The next prime is 12668533. The reversal of 12668525 is 52586621.

12668525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 958441 + 11710084 = 979^2 + 3422^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12668525 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401 + ... + 5049.

It is an arithmetic number, because the mean of its divisors is an integer number (1321375).

Almost surely, 2^12668525 is an apocalyptic number.

It is an amenable number.

12668525 is a deficient number, since it is larger than the sum of its proper divisors (3187975).

12668525 is a wasteful number, since it uses less digits than its factorization.

12668525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768 (or 4763 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 12668525 is about 3559.2871477306. The cubic root of 12668525 is about 233.1177544006.

The spelling of 12668525 in words is "twelve million, six hundred sixty-eight thousand, five hundred twenty-five".