688162506625 has 16 divisors (see below), whose sum is σ = 936901974528. Its totient is φ = 500481822000.

The previous prime is 688162506569. The next prime is 688162506671. The reversal of 688162506625 is 526605261886.

It is a happy number.

It is not a de Polignac number, because 688162506625 - 2¹⁹ = 688161982337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 250239537 + ... + 250242286.

It is an arithmetic number, because the mean of its divisors is an integer number (58556373408).

Almost surely, 2^688162506625 is an apocalyptic number.

It is an amenable number.

688162506625 is a deficient number, since it is larger than the sum of its proper divisors (248739467903).

688162506625 is a wasteful number, since it uses less digits than its factorization.

688162506625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500481849 (or 500481839 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 688162506625 in words is "six hundred eighty-eight billion, one hundred sixty-two million, five hundred six thousand, six hundred twenty-five".