12722775 has 24 divisors (see below), whose sum is σ = 22654800. Its totient is φ = 6263040.

The previous prime is 12722771. The next prime is 12722791. The reversal of 12722775 is 57722721.

It is not a de Polignac number, because 12722775 - 2² = 12722771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722771) 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, 5550 + ... + 7499.

It is an arithmetic number, because the mean of its divisors is an integer number (943950).

Almost surely, 2^12722775 is an apocalyptic number.

12722775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12722775 is a deficient number, since it is larger than the sum of its proper divisors (9932025).

12722775 is a wasteful number, since it uses less digits than its factorization.

12722775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13075 (or 13070 counting only the distinct ones).

The product of its digits is 13720, while the sum is 33.

The square root of 12722775 is about 3566.8999144916. The cubic root of 12722775 is about 233.4500379908.

The spelling of 12722775 in words is "twelve million, seven hundred twenty-two thousand, seven hundred seventy-five".