225257223 has 4 divisors (see below), whose sum is σ = 300342968. Its totient is φ = 150171480.

The previous prime is 225257209. The next prime is 225257243. The reversal of 225257223 is 322752522.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 225257223 - 2¹⁷ = 225126151 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 (225257243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37542868 + ... + 37542873.

It is an arithmetic number, because the mean of its divisors is an integer number (75085742).

Almost surely, 2^225257223 is an apocalyptic number.

225257223 is a deficient number, since it is larger than the sum of its proper divisors (75085745).

225257223 is an equidigital number, since it uses as much as digits as its factorization.

225257223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75085744.

The product of its digits is 16800, while the sum is 30.

The square root of 225257223 is about 15008.5716508934. The cubic root of 225257223 is about 608.4518864378.

The spelling of 225257223 in words is "two hundred twenty-five million, two hundred fifty-seven thousand, two hundred twenty-three".