8172265 has 4 divisors (see below), whose sum is σ = 9806724. Its totient is φ = 6537808.

The previous prime is 8172253. The next prime is 8172293. The reversal of 8172265 is 5622718.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5895184 + 2277081 = 2428^2 + 1509^2 .

It is a cyclic number.

It is not a de Polignac number, because 8172265 - 2⁵ = 8172233 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817222 + ... + 817231.

It is an arithmetic number, because the mean of its divisors is an integer number (2451681).

Almost surely, 2^8172265 is an apocalyptic number.

It is an amenable number.

8172265 is a deficient number, since it is larger than the sum of its proper divisors (1634459).

8172265 is a wasteful number, since it uses less digits than its factorization.

8172265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634458.

The product of its digits is 6720, while the sum is 31.

The square root of 8172265 is about 2858.7173697307. The cubic root of 8172265 is about 201.4253592892.

The spelling of 8172265 in words is "eight million, one hundred seventy-two thousand, two hundred sixty-five".