625547422631 has 2 divisors, whose sum is σ = 625547422632. Its totient is φ = 625547422630.

The previous prime is 625547422601. The next prime is 625547422777. The reversal of 625547422631 is 136224745526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625547422631 - 2¹⁸ = 625547160487 is a prime.

It is a super-2 number, since 2×625547422631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625547422601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312773711315 + 312773711316.

It is an arithmetic number, because the mean of its divisors is an integer number (312773711316).

Almost surely, 2^625547422631 is an apocalyptic number.

625547422631 is a deficient number, since it is larger than the sum of its proper divisors (1).

625547422631 is an equidigital number, since it uses as much as digits as its factorization.

625547422631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 47.

The spelling of 625547422631 in words is "six hundred twenty-five billion, five hundred forty-seven million, four hundred twenty-two thousand, six hundred thirty-one".