86651725 has 6 divisors (see below), whose sum is σ = 107448170. Its totient is φ = 69321360.

The previous prime is 86651717. The next prime is 86651729. The reversal of 86651725 is 52715668.

It can be written as a sum of positive squares in 3 ways, for example, as 6405961 + 80245764 = 2531^2 + 8958^2 .

It is not a de Polignac number, because 86651725 - 2³ = 86651717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86651729) 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 5 ways as a sum of consecutive naturals, for example, 1733010 + ... + 1733059.

Almost surely, 2^86651725 is an apocalyptic number.

It is an amenable number.

86651725 is a deficient number, since it is larger than the sum of its proper divisors (20796445).

86651725 is a wasteful number, since it uses less digits than its factorization.

86651725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466079 (or 3466074 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 86651725 is about 9308.6908316906. The cubic root of 86651725 is about 442.5126982003.

The spelling of 86651725 in words is "eighty-six million, six hundred fifty-one thousand, seven hundred twenty-five".