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12505400300 = 225229107191211
BaseRepresentation
bin10111010010110000…
…10100001111101100
31012021112010011020002
423221120110033230
5201102340302200
65424522043432
7621616102001
oct135130241754
935245104202
1012505400300
115337a77378
122510049578
131243a8a963
14868bbb8a8
154d2d03bd5
hex2e96143ec

12505400300 has 144 divisors (see below), whose sum is σ = 28618168320. Its totient is φ = 4736928000.

The previous prime is 12505400293. The next prime is 12505400339. The reversal of 12505400300 is 300450521.

12505400300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59267195 + ... + 59267405.

It is an arithmetic number, because the mean of its divisors is an integer number (198737280).

Almost surely, 212505400300 is an apocalyptic number.

12505400300 is a gapful number since it is divisible by the number (10) 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 12505400300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14309084160).

12505400300 is an abundant number, since it is smaller than the sum of its proper divisors (16112768020).

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

12505400300 is a wasteful number, since it uses less digits than its factorization.

12505400300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 12505400300 its reverse (300450521), we get a palindrome (12805850821).

The spelling of 12505400300 in words is "twelve billion, five hundred five million, four hundred thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 29 50 58 100 107 116 145 191 211 214 290 382 422 428 535 580 725 764 844 955 1055 1070 1450 1910 2110 2140 2675 2900 3103 3820 4220 4775 5275 5350 5539 6119 6206 9550 10550 10700 11078 12238 12412 15515 19100 20437 21100 22156 22577 24476 27695 30595 31030 40301 40874 45154 55390 61190 62060 77575 80602 81748 90308 102185 110780 112885 122380 138475 152975 155150 161204 201505 204370 225770 276950 305950 310300 403010 408740 451540 510925 553900 564425 592673 611900 654733 806020 1007525 1021850 1128850 1168729 1185346 1309466 2015050 2043700 2257700 2337458 2370692 2618932 2963365 3273665 4030100 4312207 4674916 5843645 5926730 6547330 8624414 11687290 11853460 13094660 14816825 16368325 17248828 21561035 23374580 29218225 29633650 32736650 43122070 58436450 59267300 65473300 86244140 107805175 116872900 125054003 215610350 250108006 431220700 500216012 625270015 1250540030 2501080060 3126350075 6252700150 12505400300