13445144225 has 12 divisors (see below), whose sum is σ = 16725596160. Its totient is φ = 10721523600.

The previous prime is 13445144203. The next prime is 13445144231. The reversal of 13445144225 is 52244154431.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-13445144225 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 856865 + ... + 872414.

It is an arithmetic number, because the mean of its divisors is an integer number (1393799680).

Almost surely, 2^13445144225 is an apocalyptic number.

It is an amenable number.

13445144225 is a deficient number, since it is larger than the sum of its proper divisors (3280451935).

13445144225 is a wasteful number, since it uses less digits than its factorization.

13445144225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729600 (or 1729595 counting only the distinct ones).

The product of its digits is 76800, while the sum is 35.

Adding to 13445144225 its reverse (52244154431), we get a palindrome (65689298656).

The spelling of 13445144225 in words is "thirteen billion, four hundred forty-five million, one hundred forty-four thousand, two hundred twenty-five".