225292811 has 2 divisors, whose sum is σ = 225292812. Its totient is φ = 225292810.

The previous prime is 225292799. The next prime is 225292813. The reversal of 225292811 is 118292522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225292811 - 2²⁶ = 158183947 is a prime.

It is a Sophie Germain prime.

Together with 225292813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225292813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112646405 + 112646406.

It is an arithmetic number, because the mean of its divisors is an integer number (112646406).

Almost surely, 2^225292811 is an apocalyptic number.

225292811 is a deficient number, since it is larger than the sum of its proper divisors (1).

225292811 is an equidigital number, since it uses as much as digits as its factorization.

225292811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 225292811 is about 15009.7571932393. The cubic root of 225292811 is about 608.4839275051.

The spelling of 225292811 in words is "two hundred twenty-five million, two hundred ninety-two thousand, eight hundred eleven".