18825385 has 16 divisors (see below), whose sum is σ = 23693184. Its totient is φ = 14332032.

The previous prime is 18825383. The next prime is 18825397. The reversal of 18825385 is 58352881.

It is a cyclic number.

It is not a de Polignac number, because 18825385 - 2¹ = 18825383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18825383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35734 + ... + 36256.

It is an arithmetic number, because the mean of its divisors is an integer number (1480824).

Almost surely, 2^18825385 is an apocalyptic number.

It is an amenable number.

18825385 is a deficient number, since it is larger than the sum of its proper divisors (4867799).

18825385 is a wasteful number, since it uses less digits than its factorization.

18825385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its digits is 76800, while the sum is 40.

The square root of 18825385 is about 4338.8229970811. The cubic root of 18825385 is about 266.0202040545.

The spelling of 18825385 in words is "eighteen million, eight hundred twenty-five thousand, three hundred eighty-five".