12722265 has 48 divisors (see below), whose sum is σ = 23569728. Its totient is φ = 6578496.

The previous prime is 12722261. The next prime is 12722287. The reversal of 12722265 is 56222721.

It is not a de Polignac number, because 12722265 - 2² = 12722261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12722261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44814 + ... + 45096.

It is an arithmetic number, because the mean of its divisors is an integer number (491036).

Almost surely, 2^12722265 is an apocalyptic number.

12722265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12722265 is a deficient number, since it is larger than the sum of its proper divisors (10847463).

12722265 is an equidigital number, since it uses as much as digits as its factorization.

12722265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 328 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 12722265 is about 3566.8284231233. The cubic root of 12722265 is about 233.4469186213.

Adding to 12722265 its reverse (56222721), we get a palindrome (68944986).

The spelling of 12722265 in words is "twelve million, seven hundred twenty-two thousand, two hundred sixty-five".