13265281 has 4 divisors (see below), whose sum is σ = 13275972. Its totient is φ = 13254592.

The previous prime is 13265269. The next prime is 13265293. The reversal of 13265281 is 18256231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18256231 = 7 ⋅2608033.

It is an interprime number because it is at equal distance from previous prime (13265269) and next prime (13265293).

It can be written as a sum of positive squares in 2 ways, for example, as 5475600 + 7789681 = 2340^2 + 2791^2 .

It is a cyclic number.

It is not a de Polignac number, because 13265281 - 2¹¹ = 13263233 is a prime.

It is a super-2 number, since 2×13265281² = 351935360017922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13265201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3196 + ... + 6061.

It is an arithmetic number, because the mean of its divisors is an integer number (3318993).

Almost surely, 2^13265281 is an apocalyptic number.

13265281 is the 2304-th centered pentagonal number.

It is an amenable number.

13265281 is a deficient number, since it is larger than the sum of its proper divisors (10691).

13265281 is an equidigital number, since it uses as much as digits as its factorization.

13265281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690.

The product of its digits is 2880, while the sum is 28.

The square root of 13265281 is about 3642.1533465795. The cubic root of 13265281 is about 236.7221071819.

The spelling of 13265281 in words is "thirteen million, two hundred sixty-five thousand, two hundred eighty-one".