225333809 has 2 divisors, whose sum is σ = 225333810. Its totient is φ = 225333808.

The previous prime is 225333781. The next prime is 225333841. The reversal of 225333809 is 908333522.

225333809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148157584 + 77176225 = 12172^2 + 8785^2 .

It is a cyclic number.

It is not a de Polignac number, because 225333809 - 2¹⁶ = 225268273 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (225333859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112666904 + 112666905.

It is an arithmetic number, because the mean of its divisors is an integer number (112666905).

Almost surely, 2^225333809 is an apocalyptic number.

It is an amenable number.

225333809 is a deficient number, since it is larger than the sum of its proper divisors (1).

225333809 is an equidigital number, since it uses as much as digits as its factorization.

225333809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 225333809 is about 15011.1228427456. The cubic root of 225333809 is about 608.5208351940.

The spelling of 225333809 in words is "two hundred twenty-five million, three hundred thirty-three thousand, eight hundred nine".