225823811 has 2 divisors, whose sum is σ = 225823812. Its totient is φ = 225823810.

The previous prime is 225823751. The next prime is 225823823. The reversal of 225823811 is 118328522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225823811 - 2¹⁰ = 225822787 is a prime.

It is a super-2 number, since 2×225823811² = 101992787229127442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225823111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112911905 + 112911906.

It is an arithmetic number, because the mean of its divisors is an integer number (112911906).

Almost surely, 2^225823811 is an apocalyptic number.

225823811 is a deficient number, since it is larger than the sum of its proper divisors (1).

225823811 is an equidigital number, since it uses as much as digits as its factorization.

225823811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 32.

The square root of 225823811 is about 15027.4352768528. The cubic root of 225823811 is about 608.9616043121.

The spelling of 225823811 in words is "two hundred twenty-five million, eight hundred twenty-three thousand, eight hundred eleven".