| Base | Representation |
|---|---|
| bin | 101111101101… |
| … | …0100000000000 |
| 3 | 1202001202022200 |
| 4 | 1133122200000 |
| 5 | 22400342344 |
| 6 | 2252033200 |
| 7 | 422412636 |
| oct | 137324000 |
| 9 | 52052280 |
| 10 | 25012224 |
| 11 | 13134066 |
| 12 | 8462800 |
| 13 | 5249943 |
| 14 | 3471356 |
| 15 | 22e1069 |
| hex | 17da800 |
25012224 has 144 divisors (see below), whose sum is σ = 76658400. Its totient is φ = 7839744.
The previous prime is 25012217. The next prime is 25012231. The reversal of 25012224 is 42221052.
It is an interprime number because it is at equal distance from previous prime (25012217) and next prime (25012231).
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×250122242 = 1251222698852352, 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 = 25012197 and 25012206.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423907 + ... + 423965.
It is an arithmetic number, because the mean of its divisors is an integer number (532350).
Almost surely, 225012224 is an apocalyptic number.
25012224 is a gapful number since it is divisible by the number (24) 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 25012224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38329200).
25012224 is an abundant number, since it is smaller than the sum of its proper divisors (51646176).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25012224 is a wasteful number, since it uses less digits than its factorization.
25012224 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 110 (or 87 counting only the distinct ones).
The product of its (nonzero) digits is 320, while the sum is 18.
The square root of 25012224 is about 5001.2222506103. Note that the first 4 decimals coincide. The cubic root of 25012224 is about 292.4494236463.
Adding to 25012224 its reverse (42221052), we get a palindrome (67233276).
The spelling of 25012224 in words is "twenty-five million, twelve thousand, two hundred twenty-four".
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