112505 has 4 divisors (see below), whose sum is σ = 135012. Its totient is φ = 90000.

The previous prime is 112501. The next prime is 112507. The reversal of 112505 is 505211.

Added to its reverse (505211) it gives a triangular number (617716 = T₁₁₁₁).

112505 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505211 = 7 ⋅72173.

It can be written as a sum of positive squares in 2 ways, for example, as 89401 + 23104 = 299^2 + 152^2 .

It is not a de Polignac number, because 112505 - 2² = 112501 is a prime.

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 112505.

It is not an unprimeable number, because it can be changed into a prime (112501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11246 + ... + 11255.

It is an arithmetic number, because the mean of its divisors is an integer number (33753).

112505 is a Friedman number, since it can be written as 5*(150^2+1), using all its digits and the basic arithmetic operations.

2¹¹²⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

112505 is a deficient number, since it is larger than the sum of its proper divisors (22507).

112505 is an equidigital number, since it uses as much as digits as its factorization.

112505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22506.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 112505 is about 335.4176501021. The cubic root of 112505 is about 48.2751843970.

Adding to 112505 its reverse (505211), we get a palindrome (617716).

The spelling of 112505 in words is "one hundred twelve thousand, five hundred five".