13530322225 has 18 divisors (see below), whose sum is σ = 19516801254. Its totient is φ = 9277934400.

The previous prime is 13530322207. The next prime is 13530322271. The reversal of 13530322225 is 52222303531.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 26255376 + 13504066849 = 5124^2 + 116207^2 .

It is not a de Polignac number, because 13530322225 - 2⁵ = 13530322193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13530322193 and 13530322202.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5521356 + ... + 5523805.

Almost surely, 2^13530322225 is an apocalyptic number.

It is an amenable number.

13530322225 is a deficient number, since it is larger than the sum of its proper divisors (5986479029).

13530322225 is a wasteful number, since it uses less digits than its factorization.

13530322225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045185 (or 11045173 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 13530322225 its reverse (52222303531), we get a palindrome (65752625756).

The spelling of 13530322225 in words is "thirteen billion, five hundred thirty million, three hundred twenty-two thousand, two hundred twenty-five".