| Base | Representation |
|---|---|
| bin | 11010110101011… |
| … | …11101110001100 |
| 3 | 120200121000202100 |
| 4 | 31122233232030 |
| 5 | 430112140040 |
| 6 | 34200555100 |
| 7 | 5402306004 |
| oct | 1532575614 |
| 9 | 520530670 |
| 10 | 225115020 |
| 11 | 106087279 |
| 12 | 63482a90 |
| 13 | 3783b970 |
| 14 | 21c7d004 |
| 15 | 14b6ab30 |
| hex | d6afb8c |
225115020 has 144 divisors (see below), whose sum is σ = 778770720. Its totient is φ = 52144128.
The previous prime is 225114979. The next prime is 225115027. The reversal of 225115020 is 20511522.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 225114984 and 225115002.
It is not an unprimeable number, because it can be changed into a prime (225115027) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36951 + ... + 42609.
It is an arithmetic number, because the mean of its divisors is an integer number (5408130).
Almost surely, 2225115020 is an apocalyptic number.
225115020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 225115020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389385360).
225115020 is an abundant number, since it is smaller than the sum of its proper divisors (553655700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
225115020 is a wasteful number, since it uses less digits than its factorization.
225115020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5704 (or 5699 counting only the distinct ones).
The product of its (nonzero) digits is 200, while the sum is 18.
The square root of 225115020 is about 15003.8335101400. The cubic root of 225115020 is about 608.3238226240.
Adding to 225115020 its reverse (20511522), we get a palindrome (245626542).
It can be divided in two parts, 2251 and 15020, that added together give a palindrome (17271).
The spelling of 225115020 in words is "two hundred twenty-five million, one hundred fifteen thousand, twenty".
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