13225538 has 8 divisors (see below), whose sum is σ = 19971900. Its totient is φ = 6568240.

The previous prime is 13225517. The next prime is 13225549. The reversal of 13225538 is 83552231.

It can be written as a sum of positive squares in 2 ways, for example, as 12271009 + 954529 = 3503^2 + 977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13225538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21893 + ... + 22488.

Almost surely, 2^13225538 is an apocalyptic number.

13225538 is a deficient number, since it is larger than the sum of its proper divisors (6746362).

13225538 is a wasteful number, since it uses less digits than its factorization.

13225538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44532.

The product of its digits is 7200, while the sum is 29.

The square root of 13225538 is about 3636.6932782406. The cubic root of 13225538 is about 236.4854629191.

Adding to 13225538 its reverse (83552231), we get a palindrome (96777769).

The spelling of 13225538 in words is "thirteen million, two hundred twenty-five thousand, five hundred thirty-eight".