85856525280 has 144 divisors (see below), whose sum is σ = 310219915824. Its totient is φ = 21548298240.

The previous prime is 85856525243. The next prime is 85856525311. The reversal of 85856525280 is 8252565858.

85856525280 is a `hidden beast` number, since 8 + 58 + 5 + 65 + 2 + 528 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1729126 + ... + 1778085.

It is an arithmetic number, because the mean of its divisors is an integer number (2154304971).

Almost surely, 2^85856525280 is an apocalyptic number.

85856525280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85856525280 is an abundant number, since it is smaller than the sum of its proper divisors (224363390544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85856525280 is a wasteful number, since it uses less digits than its factorization.

85856525280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507249 (or 3507238 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 54.

The spelling of 85856525280 in words is "eighty-five billion, eight hundred fifty-six million, five hundred twenty-five thousand, two hundred eighty".