225722273 has 6 divisors (see below), whose sum is σ = 262574946. Its totient is φ = 193476192.

The previous prime is 225722267. The next prime is 225722279. The reversal of 225722273 is 372227522.

It is an interprime number because it is at equal distance from previous prime (225722267) and next prime (225722279).

It can be written as a sum of positive squares in only one way, i.e., 204118369 + 21603904 = 14287^2 + 4648^2 .

It is not a de Polignac number, because 225722273 - 2⁸ = 225722017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225722279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2303240 + ... + 2303337.

It is an arithmetic number, because the mean of its divisors is an integer number (43762491).

Almost surely, 2^225722273 is an apocalyptic number.

It is an amenable number.

225722273 is a deficient number, since it is larger than the sum of its proper divisors (36852673).

225722273 is an equidigital number, since it uses as much as digits as its factorization.

225722273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606591 (or 4606584 counting only the distinct ones).

The product of its digits is 23520, while the sum is 32.

The square root of 225722273 is about 15024.0564761984. The cubic root of 225722273 is about 608.8703207390.

Adding to 225722273 its reverse (372227522), we get a palindrome (597949795).

The spelling of 225722273 in words is "two hundred twenty-five million, seven hundred twenty-two thousand, two hundred seventy-three".