18337328225 has 12 divisors (see below), whose sum is σ = 23167312956. Its totient is φ = 14393071680.

The previous prime is 18337328213. The next prime is 18337328249. The reversal of 18337328225 is 52282373381.

It can be written as a sum of positive squares in 6 ways, for example, as 1270779904 + 17066548321 = 35648^2 + 130639^2 .

It is not a de Polignac number, because 18337328225 - 2⁶ = 18337328161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6918422 + ... + 6921071.

It is an arithmetic number, because the mean of its divisors is an integer number (1930609413).

Almost surely, 2^18337328225 is an apocalyptic number.

It is an amenable number.

18337328225 is a deficient number, since it is larger than the sum of its proper divisors (4829984731).

18337328225 is a wasteful number, since it uses less digits than its factorization.

18337328225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13839556 (or 13839551 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The spelling of 18337328225 in words is "eighteen billion, three hundred thirty-seven million, three hundred twenty-eight thousand, two hundred twenty-five".