688251325 has 6 divisors (see below), whose sum is σ = 853431674. Its totient is φ = 550601040.

The previous prime is 688251313. The next prime is 688251371. The reversal of 688251325 is 523152886.

688251325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5317636 + 682933689 = 2306^2 + 26133^2 .

It is not a de Polignac number, because 688251325 - 2⁷ = 688251197 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 13765002 + ... + 13765051.

Almost surely, 2^688251325 is an apocalyptic number.

It is an amenable number.

688251325 is a deficient number, since it is larger than the sum of its proper divisors (165180349).

688251325 is a wasteful number, since it uses less digits than its factorization.

688251325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27530063 (or 27530058 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 688251325 is about 26234.5444976657. The cubic root of 688251325 is about 882.9084745372.

The spelling of 688251325 in words is "six hundred eighty-eight million, two hundred fifty-one thousand, three hundred twenty-five".