225791111 has 8 divisors (see below), whose sum is σ = 277896864. Its totient is φ = 178647840.

The previous prime is 225791107. The next prime is 225791113. The reversal of 225791111 is 111197522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225791111 - 2² = 225791107 is a prime.

It is a super-2 number, since 2×225791111² = 101963251613228642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225791113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1240520 + ... + 1240701.

It is an arithmetic number, because the mean of its divisors is an integer number (34737108).

Almost surely, 2^225791111 is an apocalyptic number.

225791111 is a deficient number, since it is larger than the sum of its proper divisors (52105753).

225791111 is a wasteful number, since it uses less digits than its factorization.

225791111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481241.

The product of its digits is 1260, while the sum is 29.

The square root of 225791111 is about 15026.3472274535. The cubic root of 225791111 is about 608.9322097063.

The spelling of 225791111 in words is "two hundred twenty-five million, seven hundred ninety-one thousand, one hundred eleven".