225618323 has 4 divisors (see below), whose sum is σ = 257849520. Its totient is φ = 193387128.

The previous prime is 225618317. The next prime is 225618329. The reversal of 225618323 is 323816522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323816522 = 2 ⋅161908261.

It is an interprime number because it is at equal distance from previous prime (225618317) and next prime (225618329).

It is a cyclic number.

It is not a de Polignac number, because 225618323 - 2¹⁴ = 225601939 is a prime.

It is a super-3 number, since 3×225618323³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225618323.

It is not an unprimeable number, because it can be changed into a prime (225618329) 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, 16115588 + ... + 16115601.

It is an arithmetic number, because the mean of its divisors is an integer number (64462380).

Almost surely, 2^225618323 is an apocalyptic number.

225618323 is a deficient number, since it is larger than the sum of its proper divisors (32231197).

225618323 is an equidigital number, since it uses as much as digits as its factorization.

225618323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32231196.

The product of its digits is 17280, while the sum is 32.

The square root of 225618323 is about 15020.5966259666. The cubic root of 225618323 is about 608.7768403937.

The spelling of 225618323 in words is "two hundred twenty-five million, six hundred eighteen thousand, three hundred twenty-three".