625052709 has 12 divisors (see below), whose sum is σ = 950372800. Its totient is φ = 394770024.

The previous prime is 625052707. The next prime is 625052713. The reversal of 625052709 is 907250526.

625052709 is a `hidden beast` number, since 625 + 0 + 5 + 27 + 0 + 9 = 666.

It is not a de Polignac number, because 625052709 - 2¹ = 625052707 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625052707) 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 11 ways as a sum of consecutive naturals, for example, 1827469 + ... + 1827810.

Almost surely, 2^625052709 is an apocalyptic number.

It is an amenable number.

625052709 is a deficient number, since it is larger than the sum of its proper divisors (325320091).

625052709 is a wasteful number, since it uses less digits than its factorization.

625052709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3655304 (or 3655301 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 625052709 is about 25001.0541577750. The cubic root of 625052709 is about 855.0120076286.

The spelling of 625052709 in words is "six hundred twenty-five million, fifty-two thousand, seven hundred nine".