505631725 has 12 divisors (see below), whose sum is σ = 627432064. Its totient is φ = 404215920.

The previous prime is 505631671. The next prime is 505631741. The reversal of 505631725 is 527136505.

It is not a de Polignac number, because 505631725 - 2⁷ = 505631597 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 (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32722 + ... + 45628.

Almost surely, 2^505631725 is an apocalyptic number.

It is an amenable number.

505631725 is a deficient number, since it is larger than the sum of its proper divisors (121800339).

505631725 is a wasteful number, since it uses less digits than its factorization.

505631725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14484 (or 14479 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 505631725 is about 22486.2563580512. The cubic root of 505631725 is about 796.6693427507.

The spelling of 505631725 in words is "five hundred five million, six hundred thirty-one thousand, seven hundred twenty-five".