Base | Representation |
---|---|
bin | 10111110101111000… |
… | …010000000000000000 |
3 | 2110002002220202002011 |
4 | 113311320100000000 |
5 | 404412100000000 |
6 | 15432132502304 |
7 | 1564251260341 |
oct | 276570200000 |
9 | 73062822064 |
10 | 25600000000 |
11 | a9475949a3 |
12 | 4b6547a994 |
13 | 254c9320c3 |
14 | 134bd300c8 |
15 | 9ec6e02ba |
hex | 5f5e10000 |
25600000000 has 153 divisors (see below), whose sum is σ = 63999478951. Its totient is φ = 10240000000.
The previous prime is 25599999977. The next prime is 25600000039. The reversal of 25600000000 is 652.
The square root of 25600000000 is 160000.
It is a perfect power (a square, a biquadrate, a 8-th power), and thus also a powerful number.
It can be written as a sum of positive squares in 4 ways, for example, as 18201247744 + 7398752256 = 134912^2 + 86016^2 .
It is a Duffinian number.
It is an enlightened number because it begins with the concatenation of its prime factors (25).
It is an unprimeable number.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5119999998 + ... + 5120000002.
Almost surely, 225600000000 is an apocalyptic number.
25600000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
25600000000 is the 160000-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 25600000000
25600000000 is an abundant number, since it is smaller than the sum of its proper divisors (38399478951).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
25600000000 is an frugal number, since it uses more digits than its factorization.
25600000000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 72 (or 7 counting only the distinct ones).
The product of its (nonzero) digits is 60, while the sum is 13.
Adding to 25600000000 its reverse (652), we get a palindrome (25600000652).
The spelling of 25600000000 in words is "twenty-five billion, six hundred million", and thus it is an aban number.
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