63891325 has 24 divisors (see below), whose sum is σ = 82244736. Its totient is φ = 49200000.

The previous prime is 63891301. The next prime is 63891343. The reversal of 63891325 is 52319836.

It is not a de Polignac number, because 63891325 - 2⁵ = 63891293 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 (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84700 + ... + 85450.

It is an arithmetic number, because the mean of its divisors is an integer number (3426864).

Almost surely, 2^63891325 is an apocalyptic number.

It is an amenable number.

63891325 is a deficient number, since it is larger than the sum of its proper divisors (18353411).

63891325 is a wasteful number, since it uses less digits than its factorization.

63891325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 880 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 63891325 is about 7993.2049266862. The cubic root of 63891325 is about 399.7734654795.

The spelling of 63891325 in words is "sixty-three million, eight hundred ninety-one thousand, three hundred twenty-five".