9218880225 has 81 divisors (see below), whose sum is σ = 17069033163. Its totient is φ = 4756199040.

The previous prime is 9218880191. The next prime is 9218880227. The reversal of 9218880225 is 5220888129.

The square root of 9218880225 is 96015.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 576081 + 9218304144 = 759^2 + 96012^2 .

It is not a de Polignac number, because 9218880225 - 2²⁹ = 8682009313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9218880227) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 53288239 + ... + 53288411.

Almost surely, 2^9218880225 is an apocalyptic number.

9218880225 is the 96015-th square number.

9218880225 is the 48008-th centered octagonal number.

It is an amenable number.

9218880225 is a deficient number, since it is larger than the sum of its proper divisors (7850152938).

9218880225 is a wasteful number, since it uses less digits than its factorization.

9218880225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The cubic root of 9218880225 is about 2096.8115047963.

The spelling of 9218880225 in words is "nine billion, two hundred eighteen million, eight hundred eighty thousand, two hundred twenty-five".