13502225 has 24 divisors (see below), whose sum is σ = 18772608. Its totient is φ = 9547200.

The previous prime is 13502201. The next prime is 13502249. The reversal of 13502225 is 52220531.

It is an interprime number because it is at equal distance from previous prime (13502201) and next prime (13502249).

It is a de Polignac number, because none of the positive numbers 2^k-13502225 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13502197 and 13502206.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9512 + ... + 10838.

It is an arithmetic number, because the mean of its divisors is an integer number (782192).

Almost surely, 2^13502225 is an apocalyptic number.

It is an amenable number.

13502225 is a deficient number, since it is larger than the sum of its proper divisors (5270383).

13502225 is a wasteful number, since it uses less digits than its factorization.

13502225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 13502225 is about 3674.5373858487. The cubic root of 13502225 is about 238.1232384371.

Adding to 13502225 its reverse (52220531), we get a palindrome (65722756).

The spelling of 13502225 in words is "thirteen million, five hundred two thousand, two hundred twenty-five".