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12520125050 = 2521929454451
BaseRepresentation
bin10111010100100000…
…11111001001111010
31012022112211020210012
423222100133021322
5201120123000200
65430205421522
7622155210206
oct135220371172
935275736705
1012520125050
115345314294
122514b6a8a2
131246b44c24
1486ab31b06
154d4261a35
hex2ea41f27a

12520125050 has 48 divisors (see below), whose sum is σ = 25358421600. Its totient is φ = 4580856000.

The previous prime is 12520124987. The next prime is 12520125053. The reversal of 12520125050 is 5052102521.

It is not an unprimeable number, because it can be changed into a prime (12520125053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199676 + ... + 254775.

It is an arithmetic number, because the mean of its divisors is an integer number (528300450).

Almost surely, 212520125050 is an apocalyptic number.

12520125050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12520125050 is an abundant number, since it is smaller than the sum of its proper divisors (12838296550).

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

12520125050 is a wasteful number, since it uses less digits than its factorization.

12520125050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454511 (or 454506 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

Adding to 12520125050 its reverse (5052102521), we get a palindrome (17572227571).

The spelling of 12520125050 in words is "twelve billion, five hundred twenty million, one hundred twenty-five thousand, fifty".

Divisors: 1 2 5 10 19 25 29 38 50 58 95 145 190 290 475 551 725 950 1102 1450 2755 5510 13775 27550 454451 908902 2272255 4544510 8634569 11361275 13179079 17269138 22722550 26358158 43172845 65895395 86345690 131790790 215864225 250402501 329476975 431728450 500805002 658953950 1252012505 2504025010 6260062525 12520125050