625053917 has 2 divisors, whose sum is σ = 625053918. Its totient is φ = 625053916.

The previous prime is 625053883. The next prime is 625053931. The reversal of 625053917 is 719350526.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623550841 + 1503076 = 24971^2 + 1226^2 .

It is a cyclic number.

It is not a de Polignac number, because 625053917 - 2¹⁰ = 625052893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625053017) 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 as a sum of consecutive naturals, namely, 312526958 + 312526959.

It is an arithmetic number, because the mean of its divisors is an integer number (312526959).

Almost surely, 2^625053917 is an apocalyptic number.

It is an amenable number.

625053917 is a deficient number, since it is larger than the sum of its proper divisors (1).

625053917 is an equidigital number, since it uses as much as digits as its factorization.

625053917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 625053917 is about 25001.0783167447. The cubic root of 625053917 is about 855.0125584376.

The spelling of 625053917 in words is "six hundred twenty-five million, fifty-three thousand, nine hundred seventeen".