227225989 has 4 divisors (see below), whose sum is σ = 229779180. Its totient is φ = 224672800.

The previous prime is 227225983. The next prime is 227226007. The reversal of 227225989 is 989522722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 989522722 = 2 ⋅494761361.

It can be written as a sum of positive squares in 2 ways, for example, as 125821089 + 101404900 = 11217^2 + 10070^2 .

It is a cyclic number.

It is not a de Polignac number, because 227225989 - 2⁹ = 227225477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227225983) 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, 1276462 + ... + 1276639.

It is an arithmetic number, because the mean of its divisors is an integer number (57444795).

Almost surely, 2^227225989 is an apocalyptic number.

It is an amenable number.

227225989 is a deficient number, since it is larger than the sum of its proper divisors (2553191).

227225989 is an equidigital number, since it uses as much as digits as its factorization.

227225989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553190.

The product of its digits is 362880, while the sum is 46.

The square root of 227225989 is about 15074.0170160445. The cubic root of 227225989 is about 610.2193862859.

The spelling of 227225989 in words is "two hundred twenty-seven million, two hundred twenty-five thousand, nine hundred eighty-nine".