625707889 has 2 divisors, whose sum is σ = 625707890. Its totient is φ = 625707888.

The previous prime is 625707881. The next prime is 625707913. The reversal of 625707889 is 988707526.

625707889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383376400 + 242331489 = 19580^2 + 15567^2 .

It is a cyclic number.

It is not a de Polignac number, because 625707889 - 2³ = 625707881 is a prime.

It is not a weakly prime, because it can be changed into another prime (625707881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312853944 + 312853945.

It is an arithmetic number, because the mean of its divisors is an integer number (312853945).

Almost surely, 2^625707889 is an apocalyptic number.

It is an amenable number.

625707889 is a deficient number, since it is larger than the sum of its proper divisors (1).

625707889 is an equidigital number, since it uses as much as digits as its factorization.

625707889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The square root of 625707889 is about 25014.1537734140. The cubic root of 625707889 is about 855.3106443910.

The spelling of 625707889 in words is "six hundred twenty-five million, seven hundred seven thousand, eight hundred eighty-nine".