8173225 has 12 divisors (see below), whose sum is σ = 10371856. Its totient is φ = 6385680.

The previous prime is 8173219. The next prime is 8173229. The reversal of 8173225 is 5223718.

It is not a de Polignac number, because 8173225 - 2⁹ = 8172713 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8173193 and 8173202.

It is not an unprimeable number, because it can be changed into a prime (8173229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2727 + ... + 4876.

Almost surely, 2^8173225 is an apocalyptic number.

It is an amenable number.

8173225 is a deficient number, since it is larger than the sum of its proper divisors (2198631).

8173225 is a wasteful number, since it uses less digits than its factorization.

8173225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656 (or 7651 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 8173225 is about 2858.8852722696. The cubic root of 8173225 is about 201.4332461592.

The spelling of 8173225 in words is "eight million, one hundred seventy-three thousand, two hundred twenty-five".