6642625 has 16 divisors (see below), whose sum is σ = 9045504. Its totient is φ = 4830000.

The previous prime is 6642619. The next prime is 6642637. The reversal of 6642625 is 5262466.

It is not a de Polignac number, because 6642625 - 2⁵ = 6642593 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1041 + ... + 3790.

It is an arithmetic number, because the mean of its divisors is an integer number (565344).

Almost surely, 2^6642625 is an apocalyptic number.

It is an amenable number.

6642625 is a deficient number, since it is larger than the sum of its proper divisors (2402879).

6642625 is a wasteful number, since it uses less digits than its factorization.

6642625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857 (or 4847 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 6642625 is about 2577.3290437971. The cubic root of 6642625 is about 187.9806925245.

The spelling of 6642625 in words is "six million, six hundred forty-two thousand, six hundred twenty-five".