12162265 has 4 divisors (see below), whose sum is σ = 14594724. Its totient is φ = 9729808.

The previous prime is 12162263. The next prime is 12162317. The reversal of 12162265 is 56226121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56226121 = 7 ⋅8032303.

It can be written as a sum of positive squares in 2 ways, for example, as 3798601 + 8363664 = 1949^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 12162265 - 2¹ = 12162263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12162263) 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 3 ways as a sum of consecutive naturals, for example, 1216222 + ... + 1216231.

It is an arithmetic number, because the mean of its divisors is an integer number (3648681).

Almost surely, 2^12162265 is an apocalyptic number.

It is an amenable number.

12162265 is a deficient number, since it is larger than the sum of its proper divisors (2432459).

12162265 is an equidigital number, since it uses as much as digits as its factorization.

12162265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432458.

The product of its digits is 1440, while the sum is 25.

The square root of 12162265 is about 3487.4439063589. The cubic root of 12162265 is about 229.9701599599.

Adding to 12162265 its reverse (56226121), we get a palindrome (68388386).

It can be divided in two parts, 1216 and 2265, that added together give a square (3481 = 59²).

The spelling of 12162265 in words is "twelve million, one hundred sixty-two thousand, two hundred sixty-five".