Base | Representation |
---|---|
bin | 101111101110… |
… | …0001001011000 |
3 | 1202002002120110 |
4 | 1133130021120 |
5 | 22401101333 |
6 | 2252124320 |
7 | 422441412 |
oct | 137341130 |
9 | 52062513 |
10 | 25018968 |
11 | 13139137 |
12 | 84666a0 |
13 | 524ca30 |
14 | 34739b2 |
15 | 22e3063 |
hex | 17dc258 |
25018968 has 128 divisors (see below), whose sum is σ = 73483200. Its totient is φ = 7028736.
The previous prime is 25018957. The next prime is 25018969. The reversal of 25018968 is 86981052.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (25018969) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281068 + ... + 281156.
Almost surely, 225018968 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 25018968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36741600).
25018968 is an abundant number, since it is smaller than the sum of its proper divisors (48464232).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25018968 is a wasteful number, since it uses less digits than its factorization.
25018968 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 181 (or 177 counting only the distinct ones).
The product of its (nonzero) digits is 34560, while the sum is 39.
The square root of 25018968 is about 5001.8964403514. The cubic root of 25018968 is about 292.4757054846.
The spelling of 25018968 in words is "twenty-five million, eighteen thousand, nine hundred sixty-eight".
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