625645765 has 16 divisors (see below), whose sum is σ = 772405632. Its totient is φ = 486143424.

The previous prime is 625645753. The next prime is 625645771. The reversal of 625645765 is 567546526.

It is a cyclic number.

It is not a de Polignac number, because 625645765 - 2⁵ = 625645733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117082 + ... + 122308.

It is an arithmetic number, because the mean of its divisors is an integer number (48275352).

Almost surely, 2^625645765 is an apocalyptic number.

It is an amenable number.

625645765 is a deficient number, since it is larger than the sum of its proper divisors (146759867).

625645765 is a wasteful number, since it uses less digits than its factorization.

625645765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916.

The product of its digits is 1512000, while the sum is 46.

The square root of 625645765 is about 25012.9119656229. The cubic root of 625645765 is about 855.2823366784.

The spelling of 625645765 in words is "six hundred twenty-five million, six hundred forty-five thousand, seven hundred sixty-five".