663469725 has 12 divisors (see below), whose sum is σ = 1096936736. Its totient is φ = 353850480.

The previous prime is 663469679. The next prime is 663469757. The reversal of 663469725 is 527964366.

It is not a de Polignac number, because 663469725 - 2²³ = 655081117 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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4423057 + ... + 4423206.

Almost surely, 2^663469725 is an apocalyptic number.

It is an amenable number.

663469725 is a deficient number, since it is larger than the sum of its proper divisors (433467011).

663469725 is a wasteful number, since it uses less digits than its factorization.

663469725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846276 (or 8846271 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 48.

The square root of 663469725 is about 25757.9060678464. The cubic root of 663469725 is about 872.1818337839.

The spelling of 663469725 in words is "six hundred sixty-three million, four hundred sixty-nine thousand, seven hundred twenty-five".