625165013 has 6 divisors (see below), whose sum is σ = 687164982. Its totient is φ = 568331720.

The previous prime is 625164997. The next prime is 625165019. The reversal of 625165013 is 310561526.

It can be written as a sum of positive squares in only one way, i.e., 426298609 + 198866404 = 20647^2 + 14102^2 .

It is not a de Polignac number, because 625165013 - 2⁴ = 625164997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625165019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2583206 + ... + 2583447.

It is an arithmetic number, because the mean of its divisors is an integer number (114527497).

Almost surely, 2^625165013 is an apocalyptic number.

It is an amenable number.

625165013 is a deficient number, since it is larger than the sum of its proper divisors (61999969).

625165013 is a wasteful number, since it uses less digits than its factorization.

625165013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166675 (or 5166664 counting only the distinct ones).

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

The square root of 625165013 is about 25003.3000421944. The cubic root of 625165013 is about 855.0632115868.

The spelling of 625165013 in words is "six hundred twenty-five million, one hundred sixty-five thousand, thirteen".