65631125 has 32 divisors (see below), whose sum is σ = 94618368. Its totient is φ = 44520000.

The previous prime is 65631107. The next prime is 65631127. The reversal of 65631125 is 52113656.

It is not a de Polignac number, because 65631125 - 2¹⁴ = 65614741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65631127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93275 + ... + 93975.

It is an arithmetic number, because the mean of its divisors is an integer number (2956824).

Almost surely, 2^65631125 is an apocalyptic number.

It is an amenable number.

65631125 is a deficient number, since it is larger than the sum of its proper divisors (28987243).

65631125 is a wasteful number, since it uses less digits than its factorization.

65631125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 820 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 65631125 is about 8101.3039073966. The cubic root of 65631125 is about 403.3697100052.

It can be divided in two parts, 65631 and 125, that added together give a palindrome (65756).

The spelling of 65631125 in words is "sixty-five million, six hundred thirty-one thousand, one hundred twenty-five".