63864925 has 12 divisors (see below), whose sum is σ = 79292916. Its totient is φ = 51027200.

The previous prime is 63864919. The next prime is 63864961. The reversal of 63864925 is 52946836.

63864925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 4173849 + 59691076 = 2043^2 + 7726^2 .

It is not a de Polignac number, because 63864925 - 2⁷ = 63864797 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33087 + ... + 34963.

It is an arithmetic number, because the mean of its divisors is an integer number (6607743).

Almost surely, 2^63864925 is an apocalyptic number.

It is an amenable number.

63864925 is a deficient number, since it is larger than the sum of its proper divisors (15427991).

63864925 is a wasteful number, since it uses less digits than its factorization.

63864925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248 (or 3243 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 63864925 is about 7991.5533533851. The cubic root of 63864925 is about 399.7183955438.

It can be divided in two parts, 6386 and 4925, that added together give a palindrome (11311).

The spelling of 63864925 in words is "sixty-three million, eight hundred sixty-four thousand, nine hundred twenty-five".