13440225506 has 16 divisors (see below), whose sum is σ = 20725608120. Its totient is φ = 6532047360.

The previous prime is 13440225493. The next prime is 13440225509. The reversal of 13440225506 is 60552204431.

It can be written as a sum of positive squares in 4 ways, for example, as 13009455481 + 430770025 = 114059^2 + 20755^2 .

It is not an unprimeable number, because it can be changed into a prime (13440225509) 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 7 ways as a sum of consecutive naturals, for example, 13391 + ... + 164498.

Almost surely, 2^13440225506 is an apocalyptic number.

13440225506 is a deficient number, since it is larger than the sum of its proper divisors (7285382614).

13440225506 is a wasteful number, since it uses less digits than its factorization.

13440225506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178949.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 13440225506 its reverse (60552204431), we get a palindrome (73992429937).

The spelling of 13440225506 in words is "thirteen billion, four hundred forty million, two hundred twenty-five thousand, five hundred six".