20187382825 has 24 divisors (see below), whose sum is σ = 25199726400. Its totient is φ = 16042128960.

The previous prime is 20187382759. The next prime is 20187382841. The reversal of 20187382825 is 52828378102.

It is a de Polignac number, because none of the positive numbers 2^k-20187382825 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5426316 + ... + 5430034.

It is an arithmetic number, because the mean of its divisors is an integer number (1049988600).

Almost surely, 2^20187382825 is an apocalyptic number.

20187382825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20187382825 is a deficient number, since it is larger than the sum of its proper divisors (5012343575).

20187382825 is a wasteful number, since it uses less digits than its factorization.

20187382825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121 (or 5116 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 20187382825 in words is "twenty billion, one hundred eighty-seven million, three hundred eighty-two thousand, eight hundred twenty-five".