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12508000001 = 7233119113121
BaseRepresentation
bin10111010011000100…
…01110111100000001
31012021201000020100022
423221202032330001
5201104022000001
65425053503225
7621650150210
oct135142167401
935251006308
1012508000001
115339492592
122510aa1b15
13124448b043
14869297077
154d316911b
hex2e988ef01

12508000001 has 32 divisors (see below), whose sum is σ = 15479341056. Its totient is φ = 9871488000.

The previous prime is 12507999983. The next prime is 12508000007. The reversal of 12508000001 is 10000080521.

It is a cyclic number.

It is not a de Polignac number, because 12508000001 - 210 = 12507998977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12508000007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 946721 + ... + 959841.

It is an arithmetic number, because the mean of its divisors is an integer number (483729408).

Almost surely, 212508000001 is an apocalyptic number.

It is an amenable number.

12508000001 is a deficient number, since it is larger than the sum of its proper divisors (2971341055).

12508000001 is a wasteful number, since it uses less digits than its factorization.

12508000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13373.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 12508000001 its reverse (10000080521), we get a palindrome (22508080522).

The spelling of 12508000001 in words is "twelve billion, five hundred eight million, one", and thus it is an aban number.

Divisors: 1 7 23 31 161 191 217 713 1337 4393 4991 5921 13121 30751 41447 91847 136183 301783 406751 953281 2112481 2506111 2847257 9355273 17542777 57640553 65486911 77689441 403483871 543826087 1786857143 12508000001