| Base | Representation |
|---|---|
| bin | 101111101101… |
| … | …1011110011100 |
| 3 | 1202001221210200 |
| 4 | 1133123132130 |
| 5 | 22401004340 |
| 6 | 2252103500 |
| 7 | 422430405 |
| oct | 137333634 |
| 9 | 52057720 |
| 10 | 25016220 |
| 11 | 13137069 |
| 12 | 8464b90 |
| 13 | 524b6c8 |
| 14 | 34729ac |
| 15 | 22e2330 |
| hex | 17db79c |
25016220 has 72 divisors (see below), whose sum is σ = 77523264. Its totient is φ = 6526848.
The previous prime is 25016207. The next prime is 25016227. The reversal of 25016220 is 2261052.
It is a super-2 number, since 2×250162202 = 1251622526176800, which contains 22 as substring.
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 = 25016193 and 25016202.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25016227) 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 23 ways as a sum of consecutive naturals, for example, 6982 + ... + 9938.
It is an arithmetic number, because the mean of its divisors is an integer number (1076712).
Almost surely, 225016220 is an apocalyptic number.
25016220 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 25016220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38761632).
25016220 is an abundant number, since it is smaller than the sum of its proper divisors (52507044).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25016220 is a wasteful number, since it uses less digits than its factorization.
25016220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3019 (or 3014 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 18.
The square root of 25016220 is about 5001.6217369969. The cubic root of 25016220 is about 292.4649969072.
Adding to 25016220 its reverse (2261052), we get a palindrome (27277272).
The spelling of 25016220 in words is "twenty-five million, sixteen thousand, two hundred twenty".
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