13425561845 has 4 divisors (see below), whose sum is σ = 16110674220. Its totient is φ = 10740449472.

The previous prime is 13425561769. The next prime is 13425561847. The reversal of 13425561845 is 54816552431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4596704401 + 8828857444 = 67799^2 + 93962^2 .

It is a cyclic number.

It is not a de Polignac number, because 13425561845 - 2¹⁴ = 13425545461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13425561796 and 13425561805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13425561847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1342556180 + ... + 1342556189.

It is an arithmetic number, because the mean of its divisors is an integer number (4027668555).

Almost surely, 2^13425561845 is an apocalyptic number.

It is an amenable number.

13425561845 is a deficient number, since it is larger than the sum of its proper divisors (2685112375).

13425561845 is an equidigital number, since it uses as much as digits as its factorization.

13425561845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685112374.

The product of its digits is 576000, while the sum is 44.

The spelling of 13425561845 in words is "thirteen billion, four hundred twenty-five million, five hundred sixty-one thousand, eight hundred forty-five".