Search a number
-
+
20627045725 = 5211132232839
BaseRepresentation
bin10011001101011101…
…111011110101011101
31222020112102111021111
4103031131323311131
5314221010430400
613250445102021
71330104665356
oct231535736535
958215374244
1020627045725
11882547a830
123bb7b57911
131c39582900
14dd96acd2d
1580ad2c3ba
hex4cd77bd5d

20627045725 has 108 divisors (see below), whose sum is σ = 31622663520. Its totient is φ = 13229673600.

The previous prime is 20627045689. The next prime is 20627045737. The reversal of 20627045725 is 52754072602.

It is not a de Polignac number, because 20627045725 - 233 = 12037111133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 24584856 + ... + 24585694.

It is an arithmetic number, because the mean of its divisors is an integer number (292802440).

Almost surely, 220627045725 is an apocalyptic number.

20627045725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20627045725 is a deficient number, since it is larger than the sum of its proper divisors (10995617795).

20627045725 is a wasteful number, since it uses less digits than its factorization.

20627045725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The spelling of 20627045725 in words is "twenty billion, six hundred twenty-seven million, forty-five thousand, seven hundred twenty-five".

Divisors: 1 5 11 13 23 25 55 65 115 143 169 253 275 299 325 529 575 715 839 845 1265 1495 1859 2645 3289 3575 3887 4195 4225 5819 6325 6877 7475 9229 9295 10907 13225 16445 19297 19435 20975 29095 34385 42757 46145 46475 54535 75647 82225 89401 96485 97175 119977 141791 145475 171925 212267 213785 230725 250861 272675 378235 443831 447005 482425 599885 708955 983411 1061335 1068925 1254305 1559701 1891175 2219155 2235025 2759471 2999425 3261193 3544775 4882141 4917055 5306675 5769803 6271525 7798505 11095775 13797355 16305965 24410705 24585275 28849015 35873123 38992525 63467833 68986775 75007439 81529825 122053525 144245075 179365615 317339165 375037195 825081829 896828075 1586695825 1875185975 4125409145 20627045725