86517835725 has 24 divisors (see below), whose sum is σ = 143188460352. Its totient is φ = 46095865600.

The previous prime is 86517835721. The next prime is 86517835751. The reversal of 86517835725 is 52753871568.

It is not a de Polignac number, because 86517835725 - 2² = 86517835721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86517835721) 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, 513036 + ... + 660485.

It is an arithmetic number, because the mean of its divisors is an integer number (5966185848).

Almost surely, 2^86517835725 is an apocalyptic number.

It is an amenable number.

86517835725 is a deficient number, since it is larger than the sum of its proper divisors (56670624627).

86517835725 is a wasteful number, since it uses less digits than its factorization.

86517835725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174517 (or 1174512 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 57.

The spelling of 86517835725 in words is "eighty-six billion, five hundred seventeen million, eight hundred thirty-five thousand, seven hundred twenty-five".