63953616925 has 24 divisors (see below), whose sum is σ = 86536157760. Its totient is φ = 46498627200.

The previous prime is 63953616917. The next prime is 63953616953. The reversal of 63953616925 is 52961635936.

It is not a de Polignac number, because 63953616925 - 2³ = 63953616917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent 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, 1005624 + ... + 1067326.

It is an arithmetic number, because the mean of its divisors is an integer number (3605673240).

Almost surely, 2^63953616925 is an apocalyptic number.

It is an amenable number.

63953616925 is a deficient number, since it is larger than the sum of its proper divisors (22582540835).

63953616925 is a wasteful number, since it uses less digits than its factorization.

63953616925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65493 (or 65488 counting only the distinct ones).

The product of its digits is 7873200, while the sum is 55.

The spelling of 63953616925 in words is "sixty-three billion, nine hundred fifty-three million, six hundred sixteen thousand, nine hundred twenty-five".