13271225409 has 30 divisors (see below), whose sum is σ = 21467239926. Its totient is φ = 8166899520.

The previous prime is 13271225327. The next prime is 13271225419. The reversal of 13271225409 is 90452217231.

13271225409 is a `hidden beast` number, since 1 + 3 + 27 + 1 + 225 + 409 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1640250000 + 11630975409 = 40500^2 + 107847^2 .

It is not a de Polignac number, because 13271225409 - 2⁸ = 13271225153 is a prime.

It is a super-2 number, since 2×13271225409² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13271225419) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 471052 + ... + 498429.

Almost surely, 2^13271225409 is an apocalyptic number.

It is an amenable number.

13271225409 is a deficient number, since it is larger than the sum of its proper divisors (8196014517).

13271225409 is an equidigital number, since it uses as much as digits as its factorization.

13271225409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969519 (or 969497 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 13271225409 in words is "thirteen billion, two hundred seventy-one million, two hundred twenty-five thousand, four hundred nine".