13405543543225 has 24 divisors (see below), whose sum is σ = 16821360953280. Its totient is φ = 10596894064320.

The previous prime is 13405543543151. The next prime is 13405543543253. The reversal of 13405543543225 is 52234534550431.

It is not a de Polignac number, because 13405543543225 - 2¹⁹ = 13405543018937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5400837 + ... + 7481986.

It is an arithmetic number, because the mean of its divisors is an integer number (700890039720).

Almost surely, 2^{13405543543225} is an apocalyptic number.

It is an amenable number.

13405543543225 is a deficient number, since it is larger than the sum of its proper divisors (3415817410055).

13405543543225 is a wasteful number, since it uses less digits than its factorization.

13405543543225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12883329 (or 12883324 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 46.

The spelling of 13405543543225 in words is "thirteen trillion, four hundred five billion, five hundred forty-three million, five hundred forty-three thousand, two hundred twenty-five".