625759 has 6 divisors (see below), whose sum is σ = 640880. Its totient is φ = 610896.

The previous prime is 625699. The next prime is 625763. The reversal of 625759 is 957526.

It is not a de Polignac number, because 625759 - 2⁷ = 625631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625789) 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 in 5 ways as a sum of consecutive naturals, for example, 6987 + ... + 7075.

2⁶²⁵⁷⁵⁹ is an apocalyptic number.

625759 is a deficient number, since it is larger than the sum of its proper divisors (15121).

625759 is an frugal number, since it uses more digits than its factorization.

625759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 168 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 625759 is about 791.0493031411. The cubic root of 625759 is about 85.5333932463.

The spelling of 625759 in words is "six hundred twenty-five thousand, seven hundred fifty-nine".