225451271 has 4 divisors (see below), whose sum is σ = 226056072. Its totient is φ = 224846472.

The previous prime is 225451253. The next prime is 225451273. The reversal of 225451271 is 172154522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172154522 = 2 ⋅86077261.

It is a cyclic number.

It is not a de Polignac number, because 225451271 - 2²² = 221256967 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 (225451273) 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, 301841 + ... + 302586.

It is an arithmetic number, because the mean of its divisors is an integer number (56514018).

Almost surely, 2^225451271 is an apocalyptic number.

225451271 is a deficient number, since it is larger than the sum of its proper divisors (604801).

225451271 is an equidigital number, since it uses as much as digits as its factorization.

225451271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604800.

The product of its digits is 5600, while the sum is 29.

The square root of 225451271 is about 15015.0348317944. The cubic root of 225451271 is about 608.6265533997.

The spelling of 225451271 in words is "two hundred twenty-five million, four hundred fifty-one thousand, two hundred seventy-one".