13425218194 has 4 divisors (see below), whose sum is σ = 20137827294. Its totient is φ = 6712609096.

The previous prime is 13425218129. The next prime is 13425218207. The reversal of 13425218194 is 49181252431.

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

It can be written as a sum of positive squares in only one way, i.e., 9557995225 + 3867222969 = 97765^2 + 62187^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3356304547 + ... + 3356304550.

Almost surely, 2^13425218194 is an apocalyptic number.

13425218194 is a deficient number, since it is larger than the sum of its proper divisors (6712609100).

13425218194 is an equidigital number, since it uses as much as digits as its factorization.

13425218194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6712609099.

The product of its digits is 69120, while the sum is 40.

The spelling of 13425218194 in words is "thirteen billion, four hundred twenty-five million, two hundred eighteen thousand, one hundred ninety-four".