18825227 has 2 divisors, whose sum is σ = 18825228. Its totient is φ = 18825226.

The previous prime is 18825221. The next prime is 18825241. The reversal of 18825227 is 72252881.

It is a weak prime.

It is an emirp because it is prime and its reverse (72252881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18825227 - 2⁴ = 18825211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18825221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9412613 + 9412614.

It is an arithmetic number, because the mean of its divisors is an integer number (9412614).

Almost surely, 2^18825227 is an apocalyptic number.

18825227 is a deficient number, since it is larger than the sum of its proper divisors (1).

18825227 is an equidigital number, since it uses as much as digits as its factorization.

18825227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 35.

The square root of 18825227 is about 4338.8047893400. The cubic root of 18825227 is about 266.0194598234.

The spelling of 18825227 in words is "eighteen million, eight hundred twenty-five thousand, two hundred twenty-seven".