86578125 has 28 divisors (see below), whose sum is σ = 144373152. Its totient is φ = 46150000.

The previous prime is 86578111. The next prime is 86578139. The reversal of 86578125 is 52187568.

It is an interprime number because it is at equal distance from previous prime (86578111) and next prime (86578139).

It is not a de Polignac number, because 86578125 - 2¹⁹ = 86053837 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 45952 + ... + 47798.

It is an arithmetic number, because the mean of its divisors is an integer number (5156184).

Almost surely, 2^86578125 is an apocalyptic number.

It is an amenable number.

86578125 is a deficient number, since it is larger than the sum of its proper divisors (57795027).

86578125 is an frugal number, since it uses more digits than its factorization.

86578125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1855 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 86578125 is about 9304.7366969732. The cubic root of 86578125 is about 442.3873759787.

The spelling of 86578125 in words is "eighty-six million, five hundred seventy-eight thousand, one hundred twenty-five".