227225217 has 4 divisors (see below), whose sum is σ = 302966960. Its totient is φ = 151483476.

The previous prime is 227225209. The next prime is 227225227. The reversal of 227225217 is 712522722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 227225217 - 2³ = 227225209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227225227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37870867 + ... + 37870872.

It is an arithmetic number, because the mean of its divisors is an integer number (75741740).

Almost surely, 2^227225217 is an apocalyptic number.

It is an amenable number.

227225217 is a deficient number, since it is larger than the sum of its proper divisors (75741743).

227225217 is an equidigital number, since it uses as much as digits as its factorization.

227225217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75741742.

The product of its digits is 7840, while the sum is 30.

The square root of 227225217 is about 15073.9914090462. The cubic root of 227225217 is about 610.2186952119.

Adding to 227225217 its reverse (712522722), we get a palindrome (939747939).

The spelling of 227225217 in words is "two hundred twenty-seven million, two hundred twenty-five thousand, two hundred seventeen".