111236225 has 6 divisors (see below), whose sum is σ = 137932950. Its totient is φ = 88988960.

The previous prime is 111236221. The next prime is 111236233. The reversal of 111236225 is 522632111.

It can be written as a sum of positive squares in 3 ways, for example, as 35058241 + 76177984 = 5921^2 + 8728^2 .

It is not a de Polignac number, because 111236225 - 2² = 111236221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111236225.

It is not an unprimeable number, because it can be changed into a prime (111236221) 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, 2224700 + ... + 2224749.

It is an arithmetic number, because the mean of its divisors is an integer number (22988825).

Almost surely, 2^111236225 is an apocalyptic number.

It is an amenable number.

111236225 is a deficient number, since it is larger than the sum of its proper divisors (26696725).

111236225 is an equidigital number, since it uses as much as digits as its factorization.

111236225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449459 (or 4449454 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 111236225 is about 10546.8585370242. The cubic root of 111236225 is about 480.9302345353.

Adding to 111236225 its reverse (522632111), we get a palindrome (633868336).

The spelling of 111236225 in words is "one hundred eleven million, two hundred thirty-six thousand, two hundred twenty-five".