625559 has 16 divisors (see below), whose sum is σ = 738720. Its totient is φ = 524160.

The previous prime is 625543. The next prime is 625589. The reversal of 625559 is 955526.

It is a cyclic number.

It is not a de Polignac number, because 625559 - 2⁴ = 625543 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 (625529) 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 15 ways as a sum of consecutive naturals, for example, 11777 + ... + 11829.

It is an arithmetic number, because the mean of its divisors is an integer number (46170).

2⁶²⁵⁵⁵⁹ is an apocalyptic number.

625559 is a deficient number, since it is larger than the sum of its proper divisors (113161).

625559 is a wasteful number, since it uses less digits than its factorization.

625559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130.

The product of its digits is 13500, while the sum is 32.

The square root of 625559 is about 790.9228786677. The cubic root of 625559 is about 85.5242797796.

The spelling of 625559 in words is "six hundred twenty-five thousand, five hundred fifty-nine".