625389259 has 4 divisors (see below), whose sum is σ = 682242840. Its totient is φ = 568535680.

The previous prime is 625389239. The next prime is 625389307. The reversal of 625389259 is 952983526.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 625389259 - 2⁷ = 625389131 is a prime.

It is a super-2 number, since 2×625389259² = 782223450545138162, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625389239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28426774 + ... + 28426795.

It is an arithmetic number, because the mean of its divisors is an integer number (170560710).

Almost surely, 2^625389259 is an apocalyptic number.

625389259 is a deficient number, since it is larger than the sum of its proper divisors (56853581).

625389259 is a wasteful number, since it uses less digits than its factorization.

625389259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56853580.

The product of its digits is 1166400, while the sum is 49.

The square root of 625389259 is about 25007.7839681968. The cubic root of 625389259 is about 855.1654361085.

The spelling of 625389259 in words is "six hundred twenty-five million, three hundred eighty-nine thousand, two hundred fifty-nine".