86129725 has 24 divisors (see below), whose sum is σ = 119367360. Its totient is φ = 61104000.

The previous prime is 86129653. The next prime is 86129737. The reversal of 86129725 is 52792168.

It is not a de Polignac number, because 86129725 - 2⁷ = 86129597 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 7456 + ... + 15094.

It is an arithmetic number, because the mean of its divisors is an integer number (4973640).

Almost surely, 2^86129725 is an apocalyptic number.

It is an amenable number.

86129725 is a deficient number, since it is larger than the sum of its proper divisors (33237635).

86129725 is a wasteful number, since it uses less digits than its factorization.

86129725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7701 (or 7696 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 86129725 is about 9280.6101631304. The cubic root of 86129725 is about 441.6223253614.

The spelling of 86129725 in words is "eighty-six million, one hundred twenty-nine thousand, seven hundred twenty-five".