9225218 has 4 divisors (see below), whose sum is σ = 13837830. Its totient is φ = 4612608.

The previous prime is 9225217. The next prime is 9225221. The reversal of 9225218 is 8125229.

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

It can be written as a sum of positive squares in only one way, i.e., 9223369 + 1849 = 3037^2 + 43^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9225211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2306303 + ... + 2306306.

Almost surely, 2^9225218 is an apocalyptic number.

9225218 is a deficient number, since it is larger than the sum of its proper divisors (4612612).

9225218 is a wasteful number, since it uses less digits than its factorization.

9225218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612611.

The product of its digits is 2880, while the sum is 29.

The square root of 9225218 is about 3037.3043969942. The cubic root of 9225218 is about 209.7291898476.

The spelling of 9225218 in words is "nine million, two hundred twenty-five thousand, two hundred eighteen".