18272433225 has 96 divisors (see below), whose sum is σ = 31406132736. Its totient is φ = 9368985600.

The previous prime is 18272433203. The next prime is 18272433227. The reversal of 18272433225 is 52233427281.

It is not a de Polignac number, because 18272433225 - 2⁷ = 18272433097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18272433227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 75819105 + ... + 75819345.

It is an arithmetic number, because the mean of its divisors is an integer number (327147216).

Almost surely, 2^18272433225 is an apocalyptic number.

18272433225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18272433225 is a deficient number, since it is larger than the sum of its proper divisors (13133699511).

18272433225 is a wasteful number, since it uses less digits than its factorization.

18272433225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 590 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The spelling of 18272433225 in words is "eighteen billion, two hundred seventy-two million, four hundred thirty-three thousand, two hundred twenty-five".