13261265 has 8 divisors (see below), whose sum is σ = 16462440. Its totient is φ = 10243072.

The previous prime is 13261231. The next prime is 13261277. The reversal of 13261265 is 56216231.

13261265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 358801 + 12902464 = 599^2 + 3592^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13261265 - 2⁸ = 13261009 is a prime.

It is a super-2 number, since 2×13261265² = 351722298800450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45584 + ... + 45873.

It is an arithmetic number, because the mean of its divisors is an integer number (2057805).

Almost surely, 2^13261265 is an apocalyptic number.

It is an amenable number.

13261265 is a deficient number, since it is larger than the sum of its proper divisors (3201175).

13261265 is an equidigital number, since it uses as much as digits as its factorization.

13261265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91491.

The product of its digits is 2160, while the sum is 26.

The square root of 13261265 is about 3641.6019826445. The cubic root of 13261265 is about 236.6982159444.

Adding to 13261265 its reverse (56216231), we get a palindrome (69477496).

The spelling of 13261265 in words is "thirteen million, two hundred sixty-one thousand, two hundred sixty-five".