625082989 has 2 divisors, whose sum is σ = 625082990. Its totient is φ = 625082988.

The previous prime is 625082981. The next prime is 625083031. The reversal of 625082989 is 989280526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427455625 + 197627364 = 20675^2 + 14058^2 .

It is a cyclic number.

It is not a de Polignac number, because 625082989 - 2³ = 625082981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625082981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312541494 + 312541495.

It is an arithmetic number, because the mean of its divisors is an integer number (312541495).

Almost surely, 2^625082989 is an apocalyptic number.

It is an amenable number.

625082989 is a deficient number, since it is larger than the sum of its proper divisors (1).

625082989 is an equidigital number, since it uses as much as digits as its factorization.

625082989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 625082989 is about 25001.6597249063. The cubic root of 625082989 is about 855.0258141152.

The spelling of 625082989 in words is "six hundred twenty-five million, eighty-two thousand, nine hundred eighty-nine".