18025446804 has 48 divisors (see below), whose sum is σ = 43424618496. Its totient is φ = 5815756800.

The previous prime is 18025446787. The next prime is 18025446809. The reversal of 18025446804 is 40864452081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18025446809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81757 + ... + 206724.

It is an arithmetic number, because the mean of its divisors is an integer number (904679552).

Almost surely, 2^18025446804 is an apocalyptic number.

It is an amenable number.

18025446804 is an abundant number, since it is smaller than the sum of its proper divisors (25399171692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18025446804 is a wasteful number, since it uses less digits than its factorization.

18025446804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288656 (or 288654 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

Adding to 18025446804 its reverse (40864452081), we get a palindrome (58889898885).

The spelling of 18025446804 in words is "eighteen billion, twenty-five million, four hundred forty-six thousand, eight hundred four".