663211325 has 36 divisors (see below), whose sum is σ = 998284320. Its totient is φ = 434982240.

The previous prime is 663211309. The next prime is 663211333. The reversal of 663211325 is 523112366.

It is not a de Polignac number, because 663211325 - 2⁴ = 663211309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16406 + ... + 39944.

It is an arithmetic number, because the mean of its divisors is an integer number (27730120).

Almost surely, 2^663211325 is an apocalyptic number.

It is an amenable number.

663211325 is a deficient number, since it is larger than the sum of its proper divisors (335072995).

663211325 is a wasteful number, since it uses less digits than its factorization.

663211325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23586 (or 23574 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 663211325 is about 25752.8896436885. The cubic root of 663211325 is about 872.0685902090.

The spelling of 663211325 in words is "six hundred sixty-three million, two hundred eleven thousand, three hundred twenty-five".