625865 has 16 divisors (see below), whose sum is σ = 798336. Its totient is φ = 470400.

The previous prime is 625861. The next prime is 625871. The reversal of 625865 is 568526.

It is a happy number.

It is not a de Polignac number, because 625865 - 2² = 625861 is a prime.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (14400) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 625865.

It is not an unprimeable number, because it can be changed into a prime (625861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8780 + ... + 8850.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2⁶²⁵⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

625865 is a deficient number, since it is larger than the sum of its proper divisors (172471).

625865 is a wasteful number, since it uses less digits than its factorization.

625865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160.

The product of its digits is 14400, while the sum is 32.

The square root of 625865 is about 791.1162999206. The cubic root of 625865 is about 85.5382225964.

The spelling of 625865 in words is "six hundred twenty-five thousand, eight hundred sixty-five".