18825211 has 2 divisors, whose sum is σ = 18825212. Its totient is φ = 18825210.

The previous prime is 18825173. The next prime is 18825217. The reversal of 18825211 is 11252881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18825211 - 2¹¹ = 18823163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18825211.

It is not a weakly prime, because it can be changed into another prime (18825217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9412605 + 9412606.

It is an arithmetic number, because the mean of its divisors is an integer number (9412606).

Almost surely, 2^18825211 is an apocalyptic number.

18825211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18825211 is an equidigital number, since it uses as much as digits as its factorization.

18825211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280, while the sum is 28.

The square root of 18825211 is about 4338.8029455139. The cubic root of 18825211 is about 266.0193844580.

The spelling of 18825211 in words is "eighteen million, eight hundred twenty-five thousand, two hundred eleven".