8218225917 has 12 divisors (see below), whose sum is σ = 12949931904. Its totient is φ = 4980742920.

The previous prime is 8218225907. The next prime is 8218225957. The reversal of 8218225917 is 7195228128.

It is not a de Polignac number, because 8218225917 - 2¹⁰ = 8218224893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218225907) 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, 41506093 + ... + 41506290.

It is an arithmetic number, because the mean of its divisors is an integer number (1079160992).

Almost surely, 2^8218225917 is an apocalyptic number.

It is an amenable number.

8218225917 is a deficient number, since it is larger than the sum of its proper divisors (4731705987).

8218225917 is a wasteful number, since it uses less digits than its factorization.

8218225917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83012400 (or 83012397 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 8218225917 is about 90654.4313147460. The cubic root of 8218225917 is about 2018.0225982271.

The spelling of 8218225917 in words is "eight billion, two hundred eighteen million, two hundred twenty-five thousand, nine hundred seventeen".