13405343425 has 12 divisors (see below), whose sum is σ = 16627525180. Its totient is φ = 10721113920.

The previous prime is 13405343407. The next prime is 13405343453. The reversal of 13405343425 is 52434350431.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1144874896 + 12260468529 = 33836^2 + 110727^2 .

It is not a de Polignac number, because 13405343425 - 2⁷ = 13405343297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9439 + ... + 164011.

Almost surely, 2^13405343425 is an apocalyptic number.

It is an amenable number.

13405343425 is a deficient number, since it is larger than the sum of its proper divisors (3222181755).

13405343425 is a wasteful number, since it uses less digits than its factorization.

13405343425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158052 (or 158047 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 13405343425 its reverse (52434350431), we get a palindrome (65839693856).

The spelling of 13405343425 in words is "thirteen billion, four hundred five million, three hundred forty-three thousand, four hundred twenty-five".