304222225 has 12 divisors (see below), whose sum is σ = 399426444. Its totient is φ = 229061120.

The previous prime is 304222223. The next prime is 304222229. The reversal of 304222225 is 522222403.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 31708161 + 272514064 = 5631^2 + 16508^2 .

It is not a de Polignac number, because 304222225 - 2¹ = 304222223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304222196 and 304222205.

It is not an unprimeable number, because it can be changed into a prime (304222223) 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 in 11 ways as a sum of consecutive naturals, for example, 357484 + ... + 358333.

It is an arithmetic number, because the mean of its divisors is an integer number (33285537).

Almost surely, 2^304222225 is an apocalyptic number.

It is an amenable number.

304222225 is a deficient number, since it is larger than the sum of its proper divisors (95204219).

304222225 is a wasteful number, since it uses less digits than its factorization.

304222225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715844 (or 715839 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 304222225 is about 17441.9673488973. The cubic root of 304222225 is about 672.5588824587.

Adding to 304222225 its reverse (522222403), we get a palindrome (826444628).

The spelling of 304222225 in words is "three hundred four million, two hundred twenty-two thousand, two hundred twenty-five".