Base | Representation |
---|---|
bin | 101111101101… |
… | …0101111011101 |
3 | 1202001210200022 |
4 | 1133122233131 |
5 | 22400410323 |
6 | 2252041525 |
7 | 422415551 |
oct | 137325735 |
9 | 52053608 |
10 | 25013213 |
11 | 13134885 |
12 | 84632a5 |
13 | 524a224 |
14 | 3471861 |
15 | 22e14c8 |
hex | 17dabdd |
25013213 has 8 divisors (see below), whose sum is σ = 26174400. Its totient is φ = 23858208.
The previous prime is 25013207. The next prime is 25013237. The reversal of 25013213 is 31231052.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 25013213 - 222 = 20818909 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 25013191 and 25013200.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25013203) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8078 + ... + 10736.
It is an arithmetic number, because the mean of its divisors is an integer number (3271800).
Almost surely, 225013213 is an apocalyptic number.
25013213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.
It is an amenable number.
25013213 is a deficient number, since it is larger than the sum of its proper divisors (1161187).
25013213 is a wasteful number, since it uses less digits than its factorization.
25013213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3091.
The product of its (nonzero) digits is 180, while the sum is 17.
The square root of 25013213 is about 5001.3211254628. The cubic root of 25013213 is about 292.4532781438.
Adding to 25013213 its reverse (31231052), we get a palindrome (56244265).
The spelling of 25013213 in words is "twenty-five million, thirteen thousand, two hundred thirteen".
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