18401028325 has 12 divisors (see below), whose sum is σ = 24018184960. Its totient is φ = 13946042160.

The previous prime is 18401028319. The next prime is 18401028337. The reversal of 18401028325 is 52382010481.

It is a happy number.

It is not a de Polignac number, because 18401028325 - 2¹⁹ = 18400504037 is a prime.

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, 19369029 + ... + 19369978.

Almost surely, 2^18401028325 is an apocalyptic number.

It is an amenable number.

18401028325 is a deficient number, since it is larger than the sum of its proper divisors (5617156635).

18401028325 is a wasteful number, since it uses less digits than its factorization.

18401028325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38739036 (or 38739031 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 18401028325 in words is "eighteen billion, four hundred one million, twenty-eight thousand, three hundred twenty-five".