225281783 has 2 divisors, whose sum is σ = 225281784. Its totient is φ = 225281782.

The previous prime is 225281767. The next prime is 225281801. The reversal of 225281783 is 387182522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225281783 - 2⁴ = 225281767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225281713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112640891 + 112640892.

It is an arithmetic number, because the mean of its divisors is an integer number (112640892).

Almost surely, 2^225281783 is an apocalyptic number.

225281783 is a deficient number, since it is larger than the sum of its proper divisors (1).

225281783 is an equidigital number, since it uses as much as digits as its factorization.

225281783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 225281783 is about 15009.3898277045. The cubic root of 225281783 is about 608.4739989885.

The spelling of 225281783 in words is "two hundred twenty-five million, two hundred eighty-one thousand, seven hundred eighty-three".