6655625 has 20 divisors (see below), whose sum is σ = 8697216. Its totient is φ = 5082000.

The previous prime is 6655603. The next prime is 6655631. The reversal of 6655625 is 5265566.

It is a de Polignac number, because none of the positive numbers 2^k-6655625 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14144 + ... + 14606.

Almost surely, 2^6655625 is an apocalyptic number.

It is an amenable number.

6655625 is a deficient number, since it is larger than the sum of its proper divisors (2041591).

6655625 is an equidigital number, since it uses as much as digits as its factorization.

6655625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 491 counting only the distinct ones).

The product of its digits is 54000, while the sum is 35.

The square root of 6655625 is about 2579.8498018296. The cubic root of 6655625 is about 188.1032422970.

The spelling of 6655625 in words is "six million, six hundred fifty-five thousand, six hundred twenty-five".