18154320325 has 12 divisors (see below), whose sum is σ = 23490112608. Its totient is φ = 13892001200.

The previous prime is 18154320293. The next prime is 18154320343. The reversal of 18154320325 is 52302345181.

It is not a de Polignac number, because 18154320325 - 2⁵ = 18154320293 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 15785791 + ... + 15786940.

It is an arithmetic number, because the mean of its divisors is an integer number (1957509384).

Almost surely, 2^18154320325 is an apocalyptic number.

It is an amenable number.

18154320325 is a deficient number, since it is larger than the sum of its proper divisors (5335792283).

18154320325 is a wasteful number, since it uses less digits than its factorization.

18154320325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31572764 (or 31572759 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 18154320325 in words is "eighteen billion, one hundred fifty-four million, three hundred twenty thousand, three hundred twenty-five".