13225547 has 4 divisors (see below), whose sum is σ = 13243776. Its totient is φ = 13207320.

The previous prime is 13225517. The next prime is 13225549. The reversal of 13225547 is 74552231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13225547 - 2⁸ = 13225291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13225549) 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, 7979 + ... + 9492.

It is an arithmetic number, because the mean of its divisors is an integer number (3310944).

Almost surely, 2^13225547 is an apocalyptic number.

13225547 is a deficient number, since it is larger than the sum of its proper divisors (18229).

13225547 is an equidigital number, since it uses as much as digits as its factorization.

13225547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18228.

The product of its digits is 8400, while the sum is 29.

The square root of 13225547 is about 3636.6945156282. The cubic root of 13225547 is about 236.4855165620.

Adding to 13225547 its reverse (74552231), we get a palindrome (87777778).

The spelling of 13225547 in words is "thirteen million, two hundred twenty-five thousand, five hundred forty-seven".