13543225 has 12 divisors (see below), whose sum is σ = 16864000. Its totient is φ = 10789200.

The previous prime is 13543223. The next prime is 13543247. The reversal of 13543225 is 52234531.

It is not a de Polignac number, because 13543225 - 2¹ = 13543223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 13543225.

It is not an unprimeable number, because it can be changed into a prime (13543223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5776 + ... + 7774.

Almost surely, 2^13543225 is an apocalyptic number.

It is an amenable number.

13543225 is a deficient number, since it is larger than the sum of its proper divisors (3320775).

13543225 is a wasteful number, since it uses less digits than its factorization.

13543225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 2275 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 13543225 is about 3680.1120906842. The cubic root of 13543225 is about 238.3640181965.

Adding to 13543225 its reverse (52234531), we get a palindrome (65777756).

The spelling of 13543225 in words is "thirteen million, five hundred forty-three thousand, two hundred twenty-five".