18039585025 has 24 divisors (see below), whose sum is σ = 27888732864. Its totient is φ = 11245454400.

The previous prime is 18039585023. The next prime is 18039585029. The reversal of 18039585025 is 52058593081.

It is not a de Polignac number, because 18039585025 - 2¹ = 18039585023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18039585023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4683682 + ... + 4687531.

It is an arithmetic number, because the mean of its divisors is an integer number (1162030536).

Almost surely, 2^18039585025 is an apocalyptic number.

It is an amenable number.

18039585025 is a deficient number, since it is larger than the sum of its proper divisors (9849147839).

18039585025 is a wasteful number, since it uses less digits than its factorization.

18039585025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9371241 (or 9371236 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 46.

The spelling of 18039585025 in words is "eighteen billion, thirty-nine million, five hundred eighty-five thousand, twenty-five".