13405424353225 has 24 divisors (see below), whose sum is σ = 16779595224920. Its totient is φ = 10623184888320.

The previous prime is 13405424353219. The next prime is 13405424353229. The reversal of 13405424353225 is 52235342450431.

It can be written as a sum of positive squares in 12 ways, for example, as 1010821116816 + 12394603236409 = 1005396^2 + 3520597^2 .

It is not a de Polignac number, because 13405424353225 - 2⁵ = 13405424353193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13405424353229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9861037 + ... + 11137813.

Almost surely, 2^{13405424353225} is an apocalyptic number.

It is an amenable number.

13405424353225 is a deficient number, since it is larger than the sum of its proper divisors (3374170871695).

13405424353225 is a wasteful number, since it uses less digits than its factorization.

13405424353225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280749 (or 1280744 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 43.

The spelling of 13405424353225 in words is "thirteen trillion, four hundred five billion, four hundred twenty-four million, three hundred fifty-three thousand, two hundred twenty-five".