634354765825 has 48 divisors (see below), whose sum is σ = 911798444736. Its totient is φ = 432675532800.

The previous prime is 634354765787. The next prime is 634354765831. The reversal of 634354765825 is 528567453436.

It is not a de Polignac number, because 634354765825 - 2⁷ = 634354765697 is a prime.

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 634354765825.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1083289 + ... + 1562761.

It is an arithmetic number, because the mean of its divisors is an integer number (18995800932).

Almost surely, 2^634354765825 is an apocalyptic number.

It is an amenable number.

634354765825 is a deficient number, since it is larger than the sum of its proper divisors (277443678911).

634354765825 is a wasteful number, since it uses less digits than its factorization.

634354765825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479794 (or 479789 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 58.

The spelling of 634354765825 in words is "six hundred thirty-four billion, three hundred fifty-four million, seven hundred sixty-five thousand, eight hundred twenty-five".