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12510505255 = 519311423439
BaseRepresentation
bin10111010011010111…
…10010100100100111
31012021212201111220111
423221223302210213
5201110142132010
65425223313451
7622010353153
oct135153624447
935255644814
1012510505255
11533a943846
1225118ab887
131244b57441
1486974a063
154d34b158a
hex2e9af2927

12510505255 has 16 divisors (see below), whose sum is σ = 15853593600. Its totient is φ = 9451136160.

The previous prime is 12510505247. The next prime is 12510505307. The reversal of 12510505255 is 55250501521.

It is not a de Polignac number, because 12510505255 - 23 = 12510505247 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182175 + ... + 241264.

It is an arithmetic number, because the mean of its divisors is an integer number (990849600).

Almost surely, 212510505255 is an apocalyptic number.

12510505255 is a deficient number, since it is larger than the sum of its proper divisors (3343088345).

12510505255 is a wasteful number, since it uses less digits than its factorization.

12510505255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423774.

The product of its (nonzero) digits is 12500, while the sum is 31.

The spelling of 12510505255 in words is "twelve billion, five hundred ten million, five hundred five thousand, two hundred fifty-five".

Divisors: 1 5 19 95 311 1555 5909 29545 423439 2117195 8045341 40226705 131689529 658447645 2502101051 12510505255