225806123 has 2 divisors, whose sum is σ = 225806124. Its totient is φ = 225806122.

The previous prime is 225806117. The next prime is 225806131. The reversal of 225806123 is 321608522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225806123 - 2⁴ = 225806107 is a prime.

It is a super-2 number, since 2×225806123² = 101976810368582258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (225806723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112903061 + 112903062.

It is an arithmetic number, because the mean of its divisors is an integer number (112903062).

Almost surely, 2^225806123 is an apocalyptic number.

225806123 is a deficient number, since it is larger than the sum of its proper divisors (1).

225806123 is an equidigital number, since it uses as much as digits as its factorization.

225806123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 225806123 is about 15026.8467417486. The cubic root of 225806123 is about 608.9457046098.

The spelling of 225806123 in words is "two hundred twenty-five million, eight hundred six thousand, one hundred twenty-three".