86525820 has 60 divisors (see below), whose sum is σ = 271439784. Its totient is φ = 23073120.

The previous prime is 86525819. The next prime is 86525827. The reversal of 86525820 is 2852568.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86525827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25086 + ... + 28325.

Almost surely, 2^86525820 is an apocalyptic number.

It is an amenable number.

86525820 is an abundant number, since it is smaller than the sum of its proper divisors (184913964).

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

86525820 is a wasteful number, since it uses less digits than its factorization.

86525820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53432 (or 53421 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 86525820 is about 9301.9256070988. The cubic root of 86525820 is about 442.2982705879.

The spelling of 86525820 in words is "eighty-six million, five hundred twenty-five thousand, eight hundred twenty".