13520011225 has 48 divisors (see below), whose sum is σ = 20019575808. Its totient is φ = 8855922240.

The previous prime is 13520011199. The next prime is 13520011249. The reversal of 13520011225 is 52211002531.

It is not a de Polignac number, because 13520011225 - 2³³ = 4930076633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13520011196 and 13520011205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3809902 + ... + 3813448.

It is an arithmetic number, because the mean of its divisors is an integer number (417074496).

Almost surely, 2^13520011225 is an apocalyptic number.

It is an amenable number.

13520011225 is a deficient number, since it is larger than the sum of its proper divisors (6499564583).

13520011225 is a wasteful number, since it uses less digits than its factorization.

13520011225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534 (or 4529 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 13520011225 its reverse (52211002531), we get a palindrome (65731013756).

The spelling of 13520011225 in words is "thirteen billion, five hundred twenty million, eleven thousand, two hundred twenty-five".