85725710018 has 48 divisors (see below), whose sum is σ = 140087903976. Its totient is φ = 39325777920.

The previous prime is 85725709961. The next prime is 85725710027. The reversal of 85725710018 is 81001752758.

It can be written as a sum of positive squares in 12 ways, for example, as 35582408689 + 50143301329 = 188633^2 + 223927^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57417680 + ... + 57419172.

Almost surely, 2^85725710018 is an apocalyptic number.

85725710018 is a deficient number, since it is larger than the sum of its proper divisors (54362193958).

85725710018 is a wasteful number, since it uses less digits than its factorization.

85725710018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439 (or 2426 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 44.

The spelling of 85725710018 in words is "eighty-five billion, seven hundred twenty-five million, seven hundred ten thousand, eighteen".