8138625 has 32 divisors (see below), whose sum is σ = 14781312. Its totient is φ = 3944000.

The previous prime is 8138579. The next prime is 8138629. The reversal of 8138625 is 5268318.

It is a happy number.

8138625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8138625 - 2⁶ = 8138561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

8138625 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8138629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3139 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (461916).

Almost surely, 2^8138625 is an apocalyptic number.

It is an amenable number.

8138625 is a deficient number, since it is larger than the sum of its proper divisors (6642687).

8138625 is a wasteful number, since it uses less digits than its factorization.

8138625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002 (or 1992 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 8138625 is about 2852.8275447352. The cubic root of 8138625 is about 201.1485993038.

The spelling of 8138625 in words is "eight million, one hundred thirty-eight thousand, six hundred twenty-five".