225993111 has 4 divisors (see below), whose sum is σ = 301324152. Its totient is φ = 150662072.

The previous prime is 225993091. The next prime is 225993127. The reversal of 225993111 is 111399522.

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 225993111 - 2¹³ = 225984919 is a prime.

It is a super-3 number, since 3×225993111³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225993191) 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, 37665516 + ... + 37665521.

It is an arithmetic number, because the mean of its divisors is an integer number (75331038).

Almost surely, 2^225993111 is an apocalyptic number.

225993111 is a deficient number, since it is larger than the sum of its proper divisors (75331041).

225993111 is an equidigital number, since it uses as much as digits as its factorization.

225993111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75331040.

The product of its digits is 4860, while the sum is 33.

The square root of 225993111 is about 15033.0672518951. The cubic root of 225993111 is about 609.1137457034.

The spelling of 225993111 in words is "two hundred twenty-five million, nine hundred ninety-three thousand, one hundred eleven".