63557425 has 24 divisors (see below), whose sum is σ = 81369792. Its totient is φ = 49224000.

The previous prime is 63557393. The next prime is 63557477. The reversal of 63557425 is 52475536.

It is not a de Polignac number, because 63557425 - 2⁵ = 63557393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107982 + ... + 108568.

It is an arithmetic number, because the mean of its divisors is an integer number (3390408).

Almost surely, 2^63557425 is an apocalyptic number.

It is an amenable number.

63557425 is a deficient number, since it is larger than the sum of its proper divisors (17812367).

63557425 is a wasteful number, since it uses less digits than its factorization.

63557425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 724 counting only the distinct ones).

The product of its digits is 126000, while the sum is 37.

The square root of 63557425 is about 7972.2910759706. The cubic root of 63557425 is about 399.0758351929.

The spelling of 63557425 in words is "sixty-three million, five hundred fifty-seven thousand, four hundred twenty-five".