13325021 has 2 divisors, whose sum is σ = 13325022. Its totient is φ = 13325020.

The previous prime is 13324999. The next prime is 13325029. The reversal of 13325021 is 12052331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 436921 = 3590^2 + 661^2 .

It is an emirp because it is prime and its reverse (12052331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13325021 - 2¹⁸ = 13062877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13325029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6662510 + 6662511.

It is an arithmetic number, because the mean of its divisors is an integer number (6662511).

Almost surely, 2^13325021 is an apocalyptic number.

It is an amenable number.

13325021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13325021 is an equidigital number, since it uses as much as digits as its factorization.

13325021 is an evil number, because the sum of its binary digits is even.

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

The square root of 13325021 is about 3650.3453261301. The cubic root of 13325021 is about 237.0769332510.

Adding to 13325021 its reverse (12052331), we get a palindrome (25377352).

The spelling of 13325021 in words is "thirteen million, three hundred twenty-five thousand, twenty-one".