using System;
using System.Text;

public class Test
{
    public static void Main()
	{
		ushort server_port = 25566;
		byte[] bytes = new byte[] {
			(byte) (server_port >> 8),
			(byte) server_port
		};

        StringBuilder hex = new StringBuilder(bytes.Length * 2);
        foreach (byte b in bytes) {
            hex.AppendFormat("{0:x2}", b);
        }

		Console.Write(hex);
	}
}