625020131 has 2 divisors, whose sum is σ = 625020132. Its totient is φ = 625020130.

The previous prime is 625020107. The next prime is 625020157. The reversal of 625020131 is 131020526.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625020131 is a prime.

It is a super-2 number, since 2×625020131² = 781300328310514322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (625020631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312510065 + 312510066.

It is an arithmetic number, because the mean of its divisors is an integer number (312510066).

Almost surely, 2^625020131 is an apocalyptic number.

625020131 is a deficient number, since it is larger than the sum of its proper divisors (1).

625020131 is an equidigital number, since it uses as much as digits as its factorization.

625020131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 625020131 is about 25000.4026167580. The cubic root of 625020131 is about 854.9971528467.

Adding to 625020131 its reverse (131020526), we get a palindrome (756040657).

The spelling of 625020131 in words is "six hundred twenty-five million, twenty thousand, one hundred thirty-one".