Base | Representation |
---|---|
bin | 10111010010011000… |
… | …101000001011011100 |
3 | 2101112121101121110000 |
4 | 113102120220023130 |
5 | 402202123222433 |
6 | 15253101214300 |
7 | 1543430544564 |
oct | 272230501334 |
9 | 71477347400 |
10 | 25004507868 |
11 | a67143593a |
12 | 4a19b61390 |
13 | 24864542b2 |
14 | 12d2bdbda4 |
15 | 9b52b3113 |
hex | 5d26282dc |
25004507868 has 240 divisors, whose sum is σ = 74562453504. Its totient is φ = 7260295680.
The previous prime is 25004507849. The next prime is 25004507887. The reversal of 25004507868 is 86870540052.
It is an interprime number because it is at equal distance from previous prime (25004507849) and next prime (25004507887).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3924021 + ... + 3930387.
Almost surely, 225004507868 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 25004507868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37281226752).
25004507868 is an abundant number, since it is smaller than the sum of its proper divisors (49557945636).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25004507868 is a wasteful number, since it uses less digits than its factorization.
25004507868 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6454 (or 6443 counting only the distinct ones).
The product of its (nonzero) digits is 537600, while the sum is 45.
The spelling of 25004507868 in words is "twenty-five billion, four million, five hundred seven thousand, eight hundred sixty-eight".
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