13225766 has 4 divisors (see below), whose sum is σ = 19838652. Its totient is φ = 6612882.

The previous prime is 13225763. The next prime is 13225781. The reversal of 13225766 is 66752231.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13225763) 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 as a sum of consecutive naturals, namely, 3306440 + ... + 3306443.

It is an arithmetic number, because the mean of its divisors is an integer number (4959663).

Almost surely, 2^13225766 is an apocalyptic number.

13225766 is a deficient number, since it is larger than the sum of its proper divisors (6612886).

13225766 is an equidigital number, since it uses as much as digits as its factorization.

13225766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612885.

The product of its digits is 15120, while the sum is 32.

The square root of 13225766 is about 3636.7246252638. The cubic root of 13225766 is about 236.4868218651.

Adding to 13225766 its reverse (66752231), we get a palindrome (79977997).

The spelling of 13225766 in words is "thirteen million, two hundred twenty-five thousand, seven hundred sixty-six".