86520825 has 48 divisors (see below), whose sum is σ = 165882240. Its totient is φ = 44130240.

The previous prime is 86520817. The next prime is 86520829. The reversal of 86520825 is 52802568.

It is not a de Polignac number, because 86520825 - 2³ = 86520817 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86520825.

It is not an unprimeable number, because it can be changed into a prime (86520829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12739 + ... + 18311.

It is an arithmetic number, because the mean of its divisors is an integer number (3455880).

Almost surely, 2^86520825 is an apocalyptic number.

It is an amenable number.

86520825 is a deficient number, since it is larger than the sum of its proper divisors (79361415).

86520825 is a wasteful number, since it uses less digits than its factorization.

86520825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5615 (or 5604 counting only the distinct ones).

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

The square root of 86520825 is about 9301.6571104293. The cubic root of 86520825 is about 442.2897593621.

The spelling of 86520825 in words is "eighty-six million, five hundred twenty thousand, eight hundred twenty-five".