634788925 has 12 divisors (see below), whose sum is σ = 833441076. Its totient is φ = 477958400.

The previous prime is 634788899. The next prime is 634788967. The reversal of 634788925 is 529887436.

It can be written as a sum of positive squares in 6 ways, for example, as 15077689 + 619711236 = 3883^2 + 24894^2 .

It is not a de Polignac number, because 634788925 - 2⁵ = 634788893 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, 746386 + ... + 747235.

It is an arithmetic number, because the mean of its divisors is an integer number (69453423).

Almost surely, 2^634788925 is an apocalyptic number.

It is an amenable number.

634788925 is a deficient number, since it is larger than the sum of its proper divisors (198652151).

634788925 is a wasteful number, since it uses less digits than its factorization.

634788925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493648 (or 1493643 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The square root of 634788925 is about 25195.0178606803. The cubic root of 634788925 is about 859.4285571911.

The spelling of 634788925 in words is "six hundred thirty-four million, seven hundred eighty-eight thousand, nine hundred twenty-five".