687500063125 has 20 divisors (see below), whose sum is σ = 860025563100. Its totient is φ = 549407552000.

The previous prime is 687500063039. The next prime is 687500063189. The reversal of 687500063125 is 521360005786.

It can be written as a sum of positive squares in 10 ways, for example, as 514615412689 + 172884650436 = 717367^2 + 415794^2 .

It is a de Polignac number, because none of the positive numbers 2^k-687500063125 is a prime.

687500063125 is a modest number, since divided by 63125 gives 6875 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11410 + ... + 1172659.

It is an arithmetic number, because the mean of its divisors is an integer number (43001278155).

Almost surely, 2^687500063125 is an apocalyptic number.

It is an amenable number.

687500063125 is a deficient number, since it is larger than the sum of its proper divisors (172525499975).

687500063125 is an equidigital number, since it uses as much as digits as its factorization.

687500063125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185018 (or 1185003 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 687500063125 in words is "six hundred eighty-seven billion, five hundred million, sixty-three thousand, one hundred twenty-five".