8639125 has 32 divisors (see below), whose sum is σ = 12070656. Its totient is φ = 6120000.

The previous prime is 8639123. The next prime is 8639131. The reversal of 8639125 is 5219368.

It is not a de Polignac number, because 8639125 - 2¹ = 8639123 is a prime.

It is a Duffinian number.

Its product of digits (12960) is a multiple of the sum of its prime divisors (180).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8639123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83824 + ... + 83926.

It is an arithmetic number, because the mean of its divisors is an integer number (377208).

Almost surely, 2^8639125 is an apocalyptic number.

It is an amenable number.

8639125 is a deficient number, since it is larger than the sum of its proper divisors (3431531).

8639125 is a wasteful number, since it uses less digits than its factorization.

8639125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 180 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 8639125 is about 2939.2388470487. The cubic root of 8639125 is about 205.1901863815.

The spelling of 8639125 in words is "eight million, six hundred thirty-nine thousand, one hundred twenty-five".