18327547371225 has 48 divisors (see below), whose sum is σ = 30449756106752. Its totient is φ = 9726997008960.

The previous prime is 18327547371193. The next prime is 18327547371233. The reversal of 18327547371225 is 52217374572381.

It is not a de Polignac number, because 18327547371225 - 2⁵ = 18327547371193 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, 12025014 + ... + 13463136.

Almost surely, 2^{18327547371225} is an apocalyptic number.

18327547371225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18327547371225 is a deficient number, since it is larger than the sum of its proper divisors (12122208735527).

18327547371225 is a wasteful number, since it uses less digits than its factorization.

18327547371225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438966 (or 1438961 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 57.

The spelling of 18327547371225 in words is "eighteen trillion, three hundred twenty-seven billion, five hundred forty-seven million, three hundred seventy-one thousand, two hundred twenty-five".