---
id: 5900f4661000cf542c50ff78
challengeType: 5
title: 'Problem 250: 250250'
---
## Description
Find the number of non-empty subsets of {11, 22, 33,..., 250250250250}, the sum of whose elements is divisible by 250. Enter the rightmost 16 digits as your answer.
## Instructions
## Tests
```yml
tests:
- text: euler250() should return 1425480602091519.
testString: 'assert.strictEqual(euler250(), 1425480602091519, "euler250() should return 1425480602091519.");'
```
## Challenge Seed
```js
function euler250() {
// Good luck!
return true;
}
euler250();
```