225643723 has 4 divisors (see below), whose sum is σ = 231742240. Its totient is φ = 219545208.

The previous prime is 225643681. The next prime is 225643741. The reversal of 225643723 is 327346522.

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

It is a cyclic number.

It is not a de Polignac number, because 225643723 - 2⁹ = 225643211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225643123) 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, 3049203 + ... + 3049276.

It is an arithmetic number, because the mean of its divisors is an integer number (57935560).

Almost surely, 2^225643723 is an apocalyptic number.

225643723 is a deficient number, since it is larger than the sum of its proper divisors (6098517).

225643723 is an equidigital number, since it uses as much as digits as its factorization.

225643723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6098516.

The product of its digits is 60480, while the sum is 34.

The square root of 225643723 is about 15021.4421078670. The cubic root of 225643723 is about 608.7996848023.

The spelling of 225643723 in words is "two hundred twenty-five million, six hundred forty-three thousand, seven hundred twenty-three".