13531043425 has 6 divisors (see below), whose sum is σ = 16778493878. Its totient is φ = 10824834720.

The previous prime is 13531043419. The next prime is 13531043429. The reversal of 13531043425 is 52434013531.

It can be written as a sum of positive squares in 3 ways, for example, as 478209424 + 13052834001 = 21868^2 + 114249^2 .

It is not a de Polignac number, because 13531043425 - 2²⁵ = 13497488993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531043429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270620844 + ... + 270620893.

Almost surely, 2^13531043425 is an apocalyptic number.

It is an amenable number.

13531043425 is a deficient number, since it is larger than the sum of its proper divisors (3247450453).

13531043425 is an equidigital number, since it uses as much as digits as its factorization.

13531043425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541241747 (or 541241742 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 13531043425 its reverse (52434013531), we get a palindrome (65965056956).

The spelling of 13531043425 in words is "thirteen billion, five hundred thirty-one million, forty-three thousand, four hundred twenty-five".