6660325 has 18 divisors (see below), whose sum is σ = 9608946. Its totient is φ = 4566240.

The previous prime is 6660307. The next prime is 6660337. The reversal of 6660325 is 5230666.

It can be written as a sum of positive squares in 3 ways, for example, as 519841 + 6140484 = 721^2 + 2478^2 .

It is not a de Polignac number, because 6660325 - 2⁵ = 6660293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6660293 and 6660302.

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 17 ways as a sum of consecutive naturals, for example, 1494 + ... + 3943.

Almost surely, 2^6660325 is an apocalyptic number.

It is an amenable number.

6660325 is a deficient number, since it is larger than the sum of its proper divisors (2948621).

6660325 is a wasteful number, since it uses less digits than its factorization.

6660325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461 (or 5449 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 6660325 is about 2580.7605468156. The cubic root of 6660325 is about 188.1475094753.

The spelling of 6660325 in words is "six million, six hundred sixty thousand, three hundred twenty-five".