Base | Representation |
---|---|
bin | 10010110111001000… |
… | …111001011010011001 |
3 | 1221021102112010220000 |
4 | 102313020321122121 |
5 | 312434110311100 |
6 | 13145343523213 |
7 | 1314605555220 |
oct | 226710713231 |
9 | 57242463800 |
10 | 20252432025 |
11 | 8652a73a31 |
12 | 3b125b9509 |
13 | 1ba9a8c2b7 |
14 | da1a35cb7 |
15 | 7d7ed0900 |
hex | 4b7239699 |
20252432025 has 240 divisors, whose sum is σ = 46704451200. Its totient is φ = 8465264640.
The previous prime is 20252432017. The next prime is 20252432047. The reversal of 20252432025 is 52023425202.
20252432025 is a `hidden beast` number, since 202 + 5 + 2 + 432 + 0 + 25 = 666.
It is not a de Polignac number, because 20252432025 - 23 = 20252432017 is a prime.
It is a super-2 number, since 2×202524320252 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 20252432025.
It is an unprimeable number.
It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 7809129 + ... + 7811721.
It is an arithmetic number, because the mean of its divisors is an integer number (194601880).
Almost surely, 220252432025 is an apocalyptic number.
20252432025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
It is an amenable number.
20252432025 is an abundant number, since it is smaller than the sum of its proper divisors (26452019175).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20252432025 is a wasteful number, since it uses less digits than its factorization.
20252432025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2670 (or 2656 counting only the distinct ones).
The product of its (nonzero) digits is 9600, while the sum is 27.
Adding to 20252432025 its reverse (52023425202), we get a palindrome (72275857227).
The spelling of 20252432025 in words is "twenty billion, two hundred fifty-two million, four hundred thirty-two thousand, twenty-five".
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