13325520 has 80 divisors (see below), whose sum is σ = 44497152. Its totient is φ = 3279360.

The previous prime is 13325519. The next prime is 13325527. The reversal of 13325520 is 2552331.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13325527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985 + ... + 5255.

Almost surely, 2^13325520 is an apocalyptic number.

13325520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13325520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22248576).

13325520 is an abundant number, since it is smaller than the sum of its proper divisors (31171632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13325520 is a wasteful number, since it uses less digits than its factorization.

13325520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300 (or 4294 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 13325520 is about 3650.4136751881. The cubic root of 13325520 is about 237.0798925938.

Adding to 13325520 its reverse (2552331), we get a palindrome (15877851).

The spelling of 13325520 in words is "thirteen million, three hundred twenty-five thousand, five hundred twenty".