225731911 has 8 divisors (see below), whose sum is σ = 237003120. Its totient is φ = 214693248.

The previous prime is 225731893. The next prime is 225731917. The reversal of 225731911 is 119137522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225731911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225731917) 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, 56146 + ... + 60031.

It is an arithmetic number, because the mean of its divisors is an integer number (29625390).

Almost surely, 2^225731911 is an apocalyptic number.

225731911 is a deficient number, since it is larger than the sum of its proper divisors (11271209).

225731911 is a wasteful number, since it uses less digits than its factorization.

225731911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116273.

The product of its digits is 3780, while the sum is 31.

The square root of 225731911 is about 15024.3772250300. The cubic root of 225731911 is about 608.8789865633.

The spelling of 225731911 in words is "two hundred twenty-five million, seven hundred thirty-one thousand, nine hundred eleven".