225440111 has 32 divisors (see below), whose sum is σ = 275970240. Its totient is φ = 181868544.

The previous prime is 225440107. The next prime is 225440177. The reversal of 225440111 is 111044522.

It is a happy number.

It is not a de Polignac number, because 225440111 - 2² = 225440107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225440101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222041 + ... + 223053.

It is an arithmetic number, because the mean of its divisors is an integer number (8624070).

Almost surely, 2^225440111 is an apocalyptic number.

225440111 is a deficient number, since it is larger than the sum of its proper divisors (50530129).

225440111 is a wasteful number, since it uses less digits than its factorization.

225440111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 225440111 is about 15014.6631996858. The cubic root of 225440111 is about 608.6165107500.

Adding to 225440111 its reverse (111044522), we get a palindrome (336484633).

The spelling of 225440111 in words is "two hundred twenty-five million, four hundred forty thousand, one hundred eleven".