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12525524231 = 1117411633693
BaseRepresentation
bin10111010101001010…
…00101010100000111
31012022220222120001212
423222211011110013
5201123013233411
65430521242035
7622252125233
oct135245052407
935286876055
1012525524231
115348371820
12251693331b
131247cb55cc
1486b7395c3
154d497b68b
hex2ea945507

12525524231 has 16 divisors (see below), whose sum is σ = 14820871968. Its totient is φ = 10455628800.

The previous prime is 12525524201. The next prime is 12525524257. The reversal of 12525524231 is 13242552521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12525524231 is a prime.

It is a super-2 number, since 2×125255242312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12525524201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809180 + ... + 824513.

It is an arithmetic number, because the mean of its divisors is an integer number (926304498).

Almost surely, 212525524231 is an apocalyptic number.

12525524231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12525524231 is a deficient number, since it is larger than the sum of its proper divisors (2295347737).

12525524231 is a wasteful number, since it uses less digits than its factorization.

12525524231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633762.

The product of its digits is 24000, while the sum is 32.

The spelling of 12525524231 in words is "twelve billion, five hundred twenty-five million, five hundred twenty-four thousand, two hundred thirty-one".

Divisors: 1 11 17 41 187 451 697 7667 1633693 17970623 27772781 66981413 305500591 736795543 1138684021 12525524231