634713156625 has 8 divisors (see below), whose sum is σ = 792122019624. Its totient is φ = 507770525200.

The previous prime is 634713156601. The next prime is 634713156691. The reversal of 634713156625 is 526651317436.

It can be written as a sum of positive squares in 4 ways, for example, as 56438079489 + 578275077136 = 237567^2 + 760444^2 .

It is not a de Polignac number, because 634713156625 - 2¹⁵ = 634713123857 is a prime.

It is a super-3 number, since 3×634713156625³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2538852502 + ... + 2538852751.

It is an arithmetic number, because the mean of its divisors is an integer number (99015252453).

Almost surely, 2^634713156625 is an apocalyptic number.

It is an amenable number.

634713156625 is a deficient number, since it is larger than the sum of its proper divisors (157408862999).

634713156625 is an equidigital number, since it uses as much as digits as its factorization.

634713156625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077705268 (or 5077705258 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 49.

The spelling of 634713156625 in words is "six hundred thirty-four billion, seven hundred thirteen million, one hundred fifty-six thousand, six hundred twenty-five".