625410685 has 8 divisors (see below), whose sum is σ = 757924056. Its totient is φ = 495374400.

The previous prime is 625410649. The next prime is 625410703. The reversal of 625410685 is 586014526.

It can be written as a sum of positive squares in 4 ways, for example, as 205119684 + 420291001 = 14322^2 + 20501^2 .

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

It is not a de Polignac number, because 625410685 - 2⁷ = 625410557 is a prime.

It is a super-2 number, since 2×625410685² = 782277049824338450, which contains 22 as substring.

It is a Duffinian number.

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, 618714 + ... + 619723.

It is an arithmetic number, because the mean of its divisors is an integer number (94740507).

Almost surely, 2^625410685 is an apocalyptic number.

It is an amenable number.

625410685 is a deficient number, since it is larger than the sum of its proper divisors (132513371).

625410685 is a wasteful number, since it uses less digits than its factorization.

625410685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238543.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 625410685 is about 25008.2123511458. The cubic root of 625410685 is about 855.1752020610.

The spelling of 625410685 in words is "six hundred twenty-five million, four hundred ten thousand, six hundred eighty-five".