111443225 has 6 divisors (see below), whose sum is σ = 138189630. Its totient is φ = 89154560.

The previous prime is 111443221. The next prime is 111443231. The reversal of 111443225 is 522344111.

It can be written as a sum of positive squares in 3 ways, for example, as 267289 + 111175936 = 517^2 + 10544^2 .

It is not a de Polignac number, because 111443225 - 2² = 111443221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111443225.

It is not an unprimeable number, because it can be changed into a prime (111443221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2228840 + ... + 2228889.

It is an arithmetic number, because the mean of its divisors is an integer number (23031605).

Almost surely, 2^111443225 is an apocalyptic number.

It is an amenable number.

111443225 is a deficient number, since it is larger than the sum of its proper divisors (26746405).

111443225 is an equidigital number, since it uses as much as digits as its factorization.

111443225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4457739 (or 4457734 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 111443225 is about 10556.6673244921. The cubic root of 111443225 is about 481.2283714348.

Adding to 111443225 its reverse (522344111), we get a palindrome (633787336).

The spelling of 111443225 in words is "one hundred eleven million, four hundred forty-three thousand, two hundred twenty-five".