111265 has 24 divisors (see below), whose sum is σ = 176832. Its totient is φ = 65280.

The previous prime is 111263. The next prime is 111269. The reversal of 111265 is 562111.

It is a happy number.

It is not a de Polignac number, because 111265 - 2¹ = 111263 is a prime.

It is a Duffinian number.

111265 is a lucky number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (111263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6537 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (7368).

2¹¹¹²⁶⁵ is an apocalyptic number.

It is an amenable number.

111265 is a deficient number, since it is larger than the sum of its proper divisors (65567).

111265 is a wasteful number, since it uses less digits than its factorization.

111265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 40 counting only the distinct ones).

The product of its digits is 60, while the sum is 16.

The square root of 111265 is about 333.5640867959. The cubic root of 111265 is about 48.0971700567.

Adding to 111265 its reverse (562111), we get a palindrome (673376).

The spelling of 111265 in words is "one hundred eleven thousand, two hundred sixty-five".