663009325 has 12 divisors (see below), whose sum is σ = 896871168. Its totient is φ = 482188400.

The previous prime is 663009301. The next prime is 663009331. The reversal of 663009325 is 523900366.

It is not a de Polignac number, because 663009325 - 2¹⁷ = 662878253 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 11 ways as a sum of consecutive naturals, for example, 1205197 + ... + 1205746.

It is an arithmetic number, because the mean of its divisors is an integer number (74739264).

Almost surely, 2^663009325 is an apocalyptic number.

It is an amenable number.

663009325 is a deficient number, since it is larger than the sum of its proper divisors (233861843).

663009325 is a wasteful number, since it uses less digits than its factorization.

663009325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410964 (or 2410959 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 663009325 is about 25748.9674550262. The cubic root of 663009325 is about 871.9800433983.

It can be divided in two parts, 66300 and 9325, that added together give a square (75625 = 275²).

The spelling of 663009325 in words is "six hundred sixty-three million, nine thousand, three hundred twenty-five".