18782025 has 24 divisors (see below), whose sum is σ = 32881824. Its totient is φ = 9427200.

The previous prime is 18782009. The next prime is 18782047. The reversal of 18782025 is 52028781.

It is not a de Polignac number, because 18782025 - 2⁴ = 18782009 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, 6091 + ... + 8640.

It is an arithmetic number, because the mean of its divisors is an integer number (1370076).

Almost surely, 2^18782025 is an apocalyptic number.

18782025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18782025 is a deficient number, since it is larger than the sum of its proper divisors (14099799).

18782025 is a wasteful number, since it uses less digits than its factorization.

18782025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14761 (or 14756 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 18782025 is about 4333.8233697279. The cubic root of 18782025 is about 265.8158080010.

Subtracting 18782025 from its reverse (52028781), we obtain a square (33246756 = 5766²).

The spelling of 18782025 in words is "eighteen million, seven hundred eighty-two thousand, twenty-five".