8081825 has 6 divisors (see below), whose sum is σ = 10021494. Its totient is φ = 6465440.

The previous prime is 8081813. The next prime is 8081833. The reversal of 8081825 is 5281808.

It can be written as a sum of positive squares in 3 ways, for example, as 21904 + 8059921 = 148^2 + 2839^2 .

It is not a de Polignac number, because 8081825 - 2⁸ = 8081569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8081791 and 8081800.

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, 161612 + ... + 161661.

It is an arithmetic number, because the mean of its divisors is an integer number (1670249).

Almost surely, 2^8081825 is an apocalyptic number.

It is an amenable number.

8081825 is a deficient number, since it is larger than the sum of its proper divisors (1939669).

8081825 is a wasteful number, since it uses less digits than its factorization.

8081825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323283 (or 323278 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 8081825 is about 2842.8550789655. The cubic root of 8081825 is about 200.6795633530.

The spelling of 8081825 in words is "eight million, eighty-one thousand, eight hundred twenty-five".