225921323 has 2 divisors, whose sum is σ = 225921324. Its totient is φ = 225921322.

The previous prime is 225921307. The next prime is 225921403. The reversal of 225921323 is 323129522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225921323 - 2⁴ = 225921307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (225921023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112960661 + 112960662.

It is an arithmetic number, because the mean of its divisors is an integer number (112960662).

Almost surely, 2^225921323 is an apocalyptic number.

225921323 is a deficient number, since it is larger than the sum of its proper divisors (1).

225921323 is an equidigital number, since it uses as much as digits as its factorization.

225921323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 225921323 is about 15030.6793924959. The cubic root of 225921323 is about 609.0492427218.

The spelling of 225921323 in words is "two hundred twenty-five million, nine hundred twenty-one thousand, three hundred twenty-three".