86128625 has 16 divisors (see below), whose sum is σ = 117262080. Its totient is φ = 62638000.

The previous prime is 86128589. The next prime is 86128631. The reversal of 86128625 is 52682168.

86128625 = 458² + 459² + ... + 707².

It is not a de Polignac number, because 86128625 - 2⁶ = 86128561 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29945 + ... + 32694.

It is an arithmetic number, because the mean of its divisors is an integer number (7328880).

Almost surely, 2^86128625 is an apocalyptic number.

It is an amenable number.

86128625 is a deficient number, since it is larger than the sum of its proper divisors (31133455).

86128625 is a wasteful number, since it uses less digits than its factorization.

86128625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62665 (or 62655 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 86128625 is about 9280.5508995964. The cubic root of 86128625 is about 441.6204453034.

The spelling of 86128625 in words is "eighty-six million, one hundred twenty-eight thousand, six hundred twenty-five".