13021325 has 6 divisors (see below), whose sum is σ = 16146474. Its totient is φ = 10417040.

The previous prime is 13021277. The next prime is 13021331. The reversal of 13021325 is 52312031.

It can be written as a sum of positive squares in 3 ways, for example, as 3467044 + 9554281 = 1862^2 + 3091^2 .

It is not a de Polignac number, because 13021325 - 2⁸ = 13021069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 260402 + ... + 260451.

It is an arithmetic number, because the mean of its divisors is an integer number (2691079).

Almost surely, 2^13021325 is an apocalyptic number.

It is an amenable number.

13021325 is a deficient number, since it is larger than the sum of its proper divisors (3125149).

13021325 is an equidigital number, since it uses as much as digits as its factorization.

13021325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520863 (or 520858 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 13021325 is about 3608.5073091238. The cubic root of 13021325 is about 235.2619683097.

Adding to 13021325 its reverse (52312031), we get a palindrome (65333356).

The spelling of 13021325 in words is "thirteen million, twenty-one thousand, three hundred twenty-five".