86944025 has 24 divisors (see below), whose sum is σ = 128575104. Its totient is φ = 57024000.

The previous prime is 86944007. The next prime is 86944049. The reversal of 86944025 is 52044968.

It is a de Polignac number, because none of the positive numbers 2^k-86944025 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 86944025.

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, 6776 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (5357296).

Almost surely, 2^86944025 is an apocalyptic number.

It is an amenable number.

86944025 is a deficient number, since it is larger than the sum of its proper divisors (41631079).

86944025 is a wasteful number, since it uses less digits than its factorization.

86944025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21641 (or 21636 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 86944025 is about 9324.3779953410. The cubic root of 86944025 is about 443.0097119385.

The spelling of 86944025 in words is "eighty-six million, nine hundred forty-four thousand, twenty-five".