625768805 has 8 divisors (see below), whose sum is σ = 763233144. Its totient is φ = 492408000.

The previous prime is 625768783. The next prime is 625768813. The reversal of 625768805 is 508867526.

625768805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 61183684 + 564585121 = 7822^2 + 23761^2 .

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

It is not a de Polignac number, because 625768805 - 2¹⁰ = 625767781 is a prime.

It is a super-2 number, since 2×625768805² = 783173194622256050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625768805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025546 + ... + 1026155.

It is an arithmetic number, because the mean of its divisors is an integer number (95404143).

Almost surely, 2^625768805 is an apocalyptic number.

It is an amenable number.

625768805 is a deficient number, since it is larger than the sum of its proper divisors (137464339).

625768805 is a wasteful number, since it uses less digits than its factorization.

625768805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051767.

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 625768805 is about 25015.3713744170. The cubic root of 625768805 is about 855.3383998412.

The spelling of 625768805 in words is "six hundred twenty-five million, seven hundred sixty-eight thousand, eight hundred five".