111225545 has 4 divisors (see below), whose sum is σ = 133470660. Its totient is φ = 88980432.

The previous prime is 111225533. The next prime is 111225553. The reversal of 111225545 is 545522111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84143929 + 27081616 = 9173^2 + 5204^2 .

It is a cyclic number.

It is not a de Polignac number, because 111225545 - 2²² = 107031241 is a prime.

It is a super-2 number, since 2×111225545² = 24742243721094050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11122550 + ... + 11122559.

It is an arithmetic number, because the mean of its divisors is an integer number (33367665).

Almost surely, 2^111225545 is an apocalyptic number.

It is an amenable number.

111225545 is a deficient number, since it is larger than the sum of its proper divisors (22245115).

111225545 is an equidigital number, since it uses as much as digits as its factorization.

111225545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22245114.

The product of its digits is 2000, while the sum is 26.

The square root of 111225545 is about 10546.3522129692. The cubic root of 111225545 is about 480.9148423693.

Adding to 111225545 its reverse (545522111), we get a palindrome (656747656).

The spelling of 111225545 in words is "one hundred eleven million, two hundred twenty-five thousand, five hundred forty-five".