Search a number
-
+
25262750291380 = 22572713731785149
BaseRepresentation
bin1011011111001111100010…
…10000011101010110110100
310022110002120111121101211021
411233213301100131112310
511302401103033311010
6125421314113150524
75215113334302010
oct557476120352664
9108402514541737
1025262750291380
11805a965a39438
122a0010bb5b444
131113361b689a4
14634a1b93d540
152dc21e94a8da
hex16f9f141d5b4

25262750291380 has 96 divisors (see below), whose sum is σ = 61017512371200. Its totient is φ = 8606412725760.

The previous prime is 25262750291333. The next prime is 25262750291381. The reversal of 25262750291380 is 8319205726252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25262750291381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13259046 + ... + 15044194.

It is an arithmetic number, because the mean of its divisors is an integer number (635599087200).

Almost surely, 225262750291380 is an apocalyptic number.

25262750291380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25262750291380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30508756185600).

25262750291380 is an abundant number, since it is smaller than the sum of its proper divisors (35754762079820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25262750291380 is a wasteful number, since it uses less digits than its factorization.

25262750291380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785809 (or 1785807 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 25262750291380 in words is "twenty-five trillion, two hundred sixty-two billion, seven hundred fifty million, two hundred ninety-one thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 271 373 542 746 1084 1355 1492 1865 1897 2611 2710 3730 3794 5222 5420 7460 7588 9485 10444 13055 18970 26110 37940 52220 101083 202166 404332 505415 707581 1010830 1415162 1785149 2021660 2830324 3537905 3570298 7075810 7140596 8925745 12496043 14151620 17851490 24992086 35702980 49984172 62480215 124960430 249920860 483775379 665860577 967550758 1331721154 1935101516 2418876895 2663442308 3329302885 3386427653 4661024039 4837753790 6658605770 6772855306 9322048078 9675507580 13317211540 13545710612 16932138265 18644096156 23305120195 33864276530 46610240390 67728553060 93220480780 180448216367 360896432734 721792865468 902241081835 1263137514569 1804482163670 2526275029138 3608964327340 5052550058276 6315687572845 12631375145690 25262750291380