65631737925 has 72 divisors (see below), whose sum is σ = 128379783168. Its totient is φ = 31855824000.

The previous prime is 65631737911. The next prime is 65631737957. The reversal of 65631737925 is 52973713656.

65631737925 is a `hidden beast` number, since 6 + 563 + 1 + 7 + 3 + 79 + 2 + 5 = 666.

It is not a de Polignac number, because 65631737925 - 2⁴ = 65631737909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 49660 + ... + 365690.

It is an arithmetic number, because the mean of its divisors is an integer number (1783052544).

Almost surely, 2^65631737925 is an apocalyptic number.

65631737925 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65631737925 is a deficient number, since it is larger than the sum of its proper divisors (62748045243).

65631737925 is a wasteful number, since it uses less digits than its factorization.

65631737925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316131 (or 316123 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 54.

The spelling of 65631737925 in words is "sixty-five billion, six hundred thirty-one million, seven hundred thirty-seven thousand, nine hundred twenty-five".