18965382825 has 24 divisors (see below), whose sum is σ = 31362742656. Its totient is φ = 10112728000.

The previous prime is 18965382797. The next prime is 18965382881. The reversal of 18965382825 is 52828356981.

It is not a de Polignac number, because 18965382825 - 2⁷ = 18965382697 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 368155 + ... + 416495.

It is an arithmetic number, because the mean of its divisors is an integer number (1306780944).

Almost surely, 2^18965382825 is an apocalyptic number.

18965382825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18965382825 is a deficient number, since it is larger than the sum of its proper divisors (12397359831).

18965382825 is a wasteful number, since it uses less digits than its factorization.

18965382825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53585 (or 53580 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 57.

The spelling of 18965382825 in words is "eighteen billion, nine hundred sixty-five million, three hundred eighty-two thousand, eight hundred twenty-five".