13405240540425 has 12 divisors (see below), whose sum is σ = 22163331026960. Its totient is φ = 7149461621520.

The previous prime is 13405240540397. The next prime is 13405240540507. The reversal of 13405240540425 is 52404504250431.

It is not a de Polignac number, because 13405240540425 - 2¹⁰ = 13405240539401 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, 89368270195 + ... + 89368270344.

Almost surely, 2^{13405240540425} is an apocalyptic number.

13405240540425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13405240540425 is a deficient number, since it is larger than the sum of its proper divisors (8758090486535).

13405240540425 is a wasteful number, since it uses less digits than its factorization.

13405240540425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178736540552 (or 178736540547 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 13405240540425 its reverse (52404504250431), we get a palindrome (65809744790856).

The spelling of 13405240540425 in words is "thirteen trillion, four hundred five billion, two hundred forty million, five hundred forty thousand, four hundred twenty-five".