625007009 has 8 divisors (see below), whose sum is σ = 688199328. Its totient is φ = 562876960.

The previous prime is 625007003. The next prime is 625007041. The reversal of 625007009 is 900700526.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-625007009 is a prime.

It is a super-2 number, since 2×625007009² = 781267522598252162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (625007003) 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, 264332 + ... + 266685.

It is an arithmetic number, because the mean of its divisors is an integer number (86024916).

Almost surely, 2^625007009 is an apocalyptic number.

It is an amenable number.

625007009 is a deficient number, since it is larger than the sum of its proper divisors (63192319).

625007009 is a wasteful number, since it uses less digits than its factorization.

625007009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531135.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 625007009 is about 25000.1401796070. The cubic root of 625007009 is about 854.9911693854.

The spelling of 625007009 in words is "six hundred twenty-five million, seven thousand, nine".