625164131 has 2 divisors, whose sum is σ = 625164132. Its totient is φ = 625164130.

The previous prime is 625164091. The next prime is 625164139. The reversal of 625164131 is 131461526.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625164131 - 2²² = 620969827 is a prime.

It is a super-2 number, since 2×625164131² = 781660381377970322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 625164094 and 625164103.

It is not a weakly prime, because it can be changed into another prime (625164139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312582065 + 312582066.

It is an arithmetic number, because the mean of its divisors is an integer number (312582066).

Almost surely, 2^625164131 is an apocalyptic number.

625164131 is a deficient number, since it is larger than the sum of its proper divisors (1).

625164131 is an equidigital number, since it uses as much as digits as its factorization.

625164131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 625164131 is about 25003.2824045164. The cubic root of 625164131 is about 855.0628094711.

The spelling of 625164131 in words is "six hundred twenty-five million, one hundred sixty-four thousand, one hundred thirty-one".