225227455 has 4 divisors (see below), whose sum is σ = 270272952. Its totient is φ = 180181960.

The previous prime is 225227447. The next prime is 225227479. The reversal of 225227455 is 554722522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554722522 = 2 ⋅277361261.

It is not a de Polignac number, because 225227455 - 2³ = 225227447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225227455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22522741 + ... + 22522750.

It is an arithmetic number, because the mean of its divisors is an integer number (67568238).

Almost surely, 2^225227455 is an apocalyptic number.

225227455 is a deficient number, since it is larger than the sum of its proper divisors (45045497).

225227455 is an equidigital number, since it uses as much as digits as its factorization.

225227455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45045496.

The product of its digits is 56000, while the sum is 34.

The square root of 225227455 is about 15007.5799181614. The cubic root of 225227455 is about 608.4250827192.

Adding to 225227455 its reverse (554722522), we get a palindrome (779949977).

The spelling of 225227455 in words is "two hundred twenty-five million, two hundred twenty-seven thousand, four hundred fifty-five".