8225217 has 72 divisors (see below), whose sum is σ = 16266432. Its totient is φ = 3896640.

The previous prime is 8225207. The next prime is 8225257. The reversal of 8225217 is 7125228.

It is not a de Polignac number, because 8225217 - 2⁴ = 8225201 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8225207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 99058 + ... + 99140.

Almost surely, 2^8225217 is an apocalyptic number.

It is an amenable number.

8225217 is a deficient number, since it is larger than the sum of its proper divisors (8041215).

8225217 is a wasteful number, since it uses less digits than its factorization.

8225217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 117 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 8225217 is about 2867.9639119068. The cubic root of 8225217 is about 201.8594666741.

The spelling of 8225217 in words is "eight million, two hundred twenty-five thousand, two hundred seventeen".