625009 has 8 divisors (see below), whose sum is σ = 779328. Its totient is φ = 486960.

The previous prime is 625007. The next prime is 625033. The reversal of 625009 is 900526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 625009 - 2¹ = 625007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3982 + ... + 4135.

It is an arithmetic number, because the mean of its divisors is an integer number (97416).

2⁶²⁵⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

625009 is a deficient number, since it is larger than the sum of its proper divisors (154319).

625009 is a wasteful number, since it uses less digits than its factorization.

625009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 625009 is about 790.5751071214. The cubic root of 625009 is about 85.4992077261.

It can be divided in two parts, 62500 and 9, that multiplied together give a square (562500 = 750²).

The spelling of 625009 in words is "six hundred twenty-five thousand, nine".