500kh/s for every 100k diff on cgminer
so 25Mh/s is 5M diff on cgminer, you can try, you should get a block every two days in worst case scenario
How do you read/find 100k diff?
When I look in my cgminer 3.7.2 or in my wallet for example with Digibytes, I see the diff is 12.6?