Base | Representation |
---|---|
bin | 101111111011… |
… | …1010110010101 |
3 | 1202021202102011 |
4 | 1133313112111 |
5 | 22413133024 |
6 | 2254344221 |
7 | 423414304 |
oct | 137672625 |
9 | 52252364 |
10 | 25130389 |
11 | 13204919 |
12 | 84bb071 |
13 | 528b66b |
14 | 34a243b |
15 | 2316094 |
hex | 17f7595 |
25130389 has 4 divisors (see below), whose sum is σ = 25142400. Its totient is φ = 25118380.
The previous prime is 25130387. The next prime is 25130393. The reversal of 25130389 is 98303152.
It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 25130389 - 21 = 25130387 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 25130389.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25130381) 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 3 ways as a sum of consecutive naturals, for example, 1957 + ... + 7354.
It is an arithmetic number, because the mean of its divisors is an integer number (6285600).
Almost surely, 225130389 is an apocalyptic number.
It is an amenable number.
25130389 is a deficient number, since it is larger than the sum of its proper divisors (12011).
25130389 is an equidigital number, since it uses as much as digits as its factorization.
25130389 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12010.
The product of its (nonzero) digits is 6480, while the sum is 31.
The square root of 25130389 is about 5013.0219429003. The cubic root of 25130389 is about 292.9092389347.
The spelling of 25130389 in words is "twenty-five million, one hundred thirty thousand, three hundred eighty-nine".
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