18484639025 has 12 divisors (see below), whose sum is σ = 22922640000. Its totient is φ = 14786622480.

The previous prime is 18484639001. The next prime is 18484639039. The reversal of 18484639025 is 52093648481.

It is not a de Polignac number, because 18484639025 - 2⁶ = 18484638961 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, 635756 + ... + 664194.

It is an arithmetic number, because the mean of its divisors is an integer number (1910220000).

Almost surely, 2^18484639025 is an apocalyptic number.

It is an amenable number.

18484639025 is a deficient number, since it is larger than the sum of its proper divisors (4438000975).

18484639025 is a wasteful number, since it uses less digits than its factorization.

18484639025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54448 (or 54443 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 18484639025 in words is "eighteen billion, four hundred eighty-four million, six hundred thirty-nine thousand, twenty-five".