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12500305210 = 2511311062217
BaseRepresentation
bin10111010010001001…
…11000010100111010
31012021011112022002001
423221010320110322
5201100034231320
65424220531214
7621524561341
oct135104702472
935234468061
1012500305210
115335107358
12250a3b0b0a
1312429c5803
14868252b58
154d264920a
hex2e913853a

12500305210 has 16 divisors (see below), whose sum is σ = 22699671336. Its totient is φ = 4955872768.

The previous prime is 12500305199. The next prime is 12500305229. The reversal of 12500305210 is 1250300521.

It can be written as a sum of positive squares in 4 ways, for example, as 5388587649 + 7111717561 = 73407^2 + 84331^2 .

It is a super-3 number, since 3×125003052103 (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5529979 + ... + 5532238.

Almost surely, 212500305210 is an apocalyptic number.

12500305210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12500305210 is a deficient number, since it is larger than the sum of its proper divisors (10199366126).

12500305210 is a wasteful number, since it uses less digits than its factorization.

12500305210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11062337.

The product of its (nonzero) digits is 300, while the sum is 19.

Adding to 12500305210 its reverse (1250300521), we get a palindrome (13750605731).

The spelling of 12500305210 in words is "twelve billion, five hundred million, three hundred five thousand, two hundred ten".

Divisors: 1 2 5 10 113 226 565 1130 11062217 22124434 55311085 110622170 1250030521 2500061042 6250152605 12500305210