8165825 has 6 divisors (see below), whose sum is σ = 10125654. Its totient is φ = 6532640.

The previous prime is 8165813. The next prime is 8165867. The reversal of 8165825 is 5285618.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1343281 + 6822544 = 1159^2 + 2612^2 .

It is not a de Polignac number, because 8165825 - 2⁴ = 8165809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 163292 + ... + 163341.

It is an arithmetic number, because the mean of its divisors is an integer number (1687609).

Almost surely, 2^8165825 is an apocalyptic number.

It is an amenable number.

8165825 is a deficient number, since it is larger than the sum of its proper divisors (1959829).

8165825 is a wasteful number, since it uses less digits than its factorization.

8165825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326643 (or 326638 counting only the distinct ones).

The product of its digits is 19200, while the sum is 35.

The square root of 8165825 is about 2857.5907684621. The cubic root of 8165825 is about 201.3724355607.

The spelling of 8165825 in words is "eight million, one hundred sixty-five thousand, eight hundred twenty-five".