625107603681 has 12 divisors (see below), whose sum is σ = 985018042320. Its totient is φ = 378853093080.

The previous prime is 625107603671. The next prime is 625107603763. The reversal of 625107603681 is 186306701526.

625107603681 is a `hidden beast` number, since 6 + 2 + 510 + 76 + 0 + 3 + 68 + 1 = 666.

It is not a de Polignac number, because 625107603681 - 2¹⁹ = 625107079393 is a prime.

It is a super-2 number, since 2×625107603681² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (625107603671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3157109011 + ... + 3157109208.

It is an arithmetic number, because the mean of its divisors is an integer number (82084836860).

Almost surely, 2^625107603681 is an apocalyptic number.

It is an amenable number.

625107603681 is a deficient number, since it is larger than the sum of its proper divisors (359910438639).

625107603681 is a wasteful number, since it uses less digits than its factorization.

625107603681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6314218236 (or 6314218233 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 625107603681 in words is "six hundred twenty-five billion, one hundred seven million, six hundred three thousand, six hundred eighty-one".