6604225 has 6 divisors (see below), whose sum is σ = 8189270. Its totient is φ = 5283360.

The previous prime is 6604217. The next prime is 6604231. The reversal of 6604225 is 5224066.

It can be written as a sum of positive squares in 3 ways, for example, as 1838736 + 4765489 = 1356^2 + 2183^2 .

It is not a de Polignac number, because 6604225 - 2³ = 6604217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 264169 = 6604225 / (6 + 6 + 0 + 4 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 6604225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132060 + ... + 132109.

Almost surely, 2^6604225 is an apocalyptic number.

It is an amenable number.

6604225 is a deficient number, since it is larger than the sum of its proper divisors (1585045).

6604225 is a wasteful number, since it uses less digits than its factorization.

6604225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264179 (or 264174 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 6604225 is about 2569.8686736874. The cubic root of 6604225 is about 187.6177630582.

The spelling of 6604225 in words is "six million, six hundred four thousand, two hundred twenty-five".