18307442825 has 48 divisors (see below), whose sum is σ = 27098075136. Its totient is φ = 11996424000.

The previous prime is 18307442807. The next prime is 18307442831. The reversal of 18307442825 is 52824470381.

It is not a de Polignac number, because 18307442825 - 2¹² = 18307438729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7175300 + ... + 7177850.

It is an arithmetic number, because the mean of its divisors is an integer number (564543232).

Almost surely, 2^18307442825 is an apocalyptic number.

It is an amenable number.

18307442825 is a deficient number, since it is larger than the sum of its proper divisors (8790632311).

18307442825 is a wasteful number, since it uses less digits than its factorization.

18307442825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374 (or 4369 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 18307442825 in words is "eighteen billion, three hundred seven million, four hundred forty-two thousand, eight hundred twenty-five".