868577521525 has 24 divisors (see below), whose sum is σ = 1231109686080. Its totient is φ = 595493794560.

The previous prime is 868577521517. The next prime is 868577521529. The reversal of 868577521525 is 525125775868.

It is not a de Polignac number, because 868577521525 - 2³ = 868577521517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868577521529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 603741 + ... + 1449709.

It is an arithmetic number, because the mean of its divisors is an integer number (51296236920).

Almost surely, 2^868577521525 is an apocalyptic number.

It is an amenable number.

868577521525 is a deficient number, since it is larger than the sum of its proper divisors (362532164555).

868577521525 is a wasteful number, since it uses less digits than its factorization.

868577521525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851853 (or 851848 counting only the distinct ones).

The product of its digits is 47040000, while the sum is 61.

The spelling of 868577521525 in words is "eight hundred sixty-eight billion, five hundred seventy-seven million, five hundred twenty-one thousand, five hundred twenty-five".