111442225 has 12 divisors (see below), whose sum is σ = 146317644. Its totient is φ = 83909120.

The previous prime is 111442171. The next prime is 111442229. The reversal of 111442225 is 522244111.

It can be written as a sum of positive squares in 6 ways, for example, as 9048064 + 102394161 = 3008^2 + 10119^2 .

It is not a de Polignac number, because 111442225 - 2⁹ = 111441713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111442196 and 111442205.

It is not an unprimeable number, because it can be changed into a prime (111442229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130684 + ... + 131533.

It is an arithmetic number, because the mean of its divisors is an integer number (12193137).

Almost surely, 2^111442225 is an apocalyptic number.

It is an amenable number.

111442225 is a deficient number, since it is larger than the sum of its proper divisors (34875419).

111442225 is a wasteful number, since it uses less digits than its factorization.

111442225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262244 (or 262239 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 111442225 is about 10556.6199609534. The cubic root of 111442225 is about 481.2269320477.

Adding to 111442225 its reverse (522244111), we get a palindrome (633686336).

The spelling of 111442225 in words is "one hundred eleven million, four hundred forty-two thousand, two hundred twenty-five".