18873270025 has 6 divisors (see below), whose sum is σ = 23402854862. Its totient is φ = 15098616000.

The previous prime is 18873269971. The next prime is 18873270037. The reversal of 18873270025 is 52007237881.

It can be written as a sum of positive squares in 3 ways, for example, as 6784487424 + 12088782601 = 82368^2 + 109949^2 .

It is not a de Polignac number, because 18873270025 - 2¹¹ = 18873267977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 377465376 + ... + 377465425.

Almost surely, 2^18873270025 is an apocalyptic number.

It is an amenable number.

18873270025 is a deficient number, since it is larger than the sum of its proper divisors (4529584837).

18873270025 is an equidigital number, since it uses as much as digits as its factorization.

18873270025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754930811 (or 754930806 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 18873270025 in words is "eighteen billion, eight hundred seventy-three million, two hundred seventy thousand, twenty-five".