688525525887 has 32 divisors (see below), whose sum is σ = 980076364800. Its totient is φ = 428688018432.

The previous prime is 688525525879. The next prime is 688525525901. The reversal of 688525525887 is 788525525886.

It is not a de Polignac number, because 688525525887 - 2³ = 688525525879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688525525847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8544039 + ... + 8624247.

It is an arithmetic number, because the mean of its divisors is an integer number (30627386400).

Almost surely, 2^688525525887 is an apocalyptic number.

688525525887 is a deficient number, since it is larger than the sum of its proper divisors (291550838913).

688525525887 is a wasteful number, since it uses less digits than its factorization.

688525525887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82367.

The product of its digits is 430080000, while the sum is 69.

Subtracting 688525525887 from its reverse (788525525886), we obtain a palindrome (99999999999).

The spelling of 688525525887 in words is "six hundred eighty-eight billion, five hundred twenty-five million, five hundred twenty-five thousand, eight hundred eighty-seven".