625324161 has 64 divisors (see below), whose sum is σ = 1114361856. Its totient is φ = 302227200.

The previous prime is 625324159. The next prime is 625324163. The reversal of 625324161 is 161423526.

It is an interprime number because it is at equal distance from previous prime (625324159) and next prime (625324163).

It is not a de Polignac number, because 625324161 - 2¹ = 625324159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (625324163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194991 + ... + 198171.

It is an arithmetic number, because the mean of its divisors is an integer number (17411904).

Almost surely, 2^625324161 is an apocalyptic number.

It is an amenable number.

625324161 is a deficient number, since it is larger than the sum of its proper divisors (489037695).

625324161 is a wasteful number, since it uses less digits than its factorization.

625324161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262.

The product of its digits is 8640, while the sum is 30.

The square root of 625324161 is about 25006.4823795751. The cubic root of 625324161 is about 855.1357631273.

Adding to 625324161 its reverse (161423526), we get a palindrome (786747687).

The spelling of 625324161 in words is "six hundred twenty-five million, three hundred twenty-four thousand, one hundred sixty-one".