111742225 has 12 divisors (see below), whose sum is σ = 158354944. Its totient is φ = 76623120.

The previous prime is 111742223. The next prime is 111742229. The reversal of 111742225 is 522247111.

It is not a de Polignac number, because 111742225 - 2¹ = 111742223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111742225.

It is not an unprimeable number, because it can be changed into a prime (111742223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319089 + ... + 319438.

Almost surely, 2^111742225 is an apocalyptic number.

It is an amenable number.

111742225 is a deficient number, since it is larger than the sum of its proper divisors (46612719).

111742225 is an equidigital number, since it uses as much as digits as its factorization.

111742225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638544 (or 638539 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 111742225 is about 10570.8195046553. The cubic root of 111742225 is about 481.6583625574.

Adding to 111742225 its reverse (522247111), we get a palindrome (633989336).

The spelling of 111742225 in words is "one hundred eleven million, seven hundred forty-two thousand, two hundred twenty-five".