625252961 has 2 divisors, whose sum is σ = 625252962. Its totient is φ = 625252960.

The previous prime is 625252921. The next prime is 625253003. The reversal of 625252961 is 169252526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433264225 + 191988736 = 20815^2 + 13856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625252961 is a prime.

It is a super-3 number, since 3×625252961³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (625252921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312626480 + 312626481.

It is an arithmetic number, because the mean of its divisors is an integer number (312626481).

Almost surely, 2^625252961 is an apocalyptic number.

It is an amenable number.

625252961 is a deficient number, since it is larger than the sum of its proper divisors (1).

625252961 is an equidigital number, since it uses as much as digits as its factorization.

625252961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 625252961 is about 25005.0587081894. The cubic root of 625252961 is about 855.1033063733.

The spelling of 625252961 in words is "six hundred twenty-five million, two hundred fifty-two thousand, nine hundred sixty-one".