8161025 has 6 divisors (see below), whose sum is σ = 10119702. Its totient is φ = 6528800.

The previous prime is 8161001. The next prime is 8161031. The reversal of 8161025 is 5201618.

It can be written as a sum of positive squares in 3 ways, for example, as 2666689 + 5494336 = 1633^2 + 2344^2 .

It is not a de Polignac number, because 8161025 - 2⁶ = 8160961 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, 163196 + ... + 163245.

It is an arithmetic number, because the mean of its divisors is an integer number (1686617).

Almost surely, 2^8161025 is an apocalyptic number.

It is an amenable number.

8161025 is a deficient number, since it is larger than the sum of its proper divisors (1958677).

8161025 is a wasteful number, since it uses less digits than its factorization.

8161025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326451 (or 326446 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 8161025 is about 2856.7507766692. The cubic root of 8161025 is about 201.3329712019.

The spelling of 8161025 in words is "eight million, one hundred sixty-one thousand, twenty-five".