688125125750 has 32 divisors (see below), whose sum is σ = 1288520966304. Its totient is φ = 275175108000.

The previous prime is 688125125711. The next prime is 688125125761. The reversal of 688125125750 is 57521521886.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549884 + ... + 1295616.

It is an arithmetic number, because the mean of its divisors is an integer number (40266280197).

Almost surely, 2^688125125750 is an apocalyptic number.

688125125750 is a deficient number, since it is larger than the sum of its proper divisors (600395840554).

688125125750 is a wasteful number, since it uses less digits than its factorization.

688125125750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749441 (or 749431 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 50.

The spelling of 688125125750 in words is "six hundred eighty-eight billion, one hundred twenty-five million, one hundred twenty-five thousand, seven hundred fifty".