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12718913325 = 352169585511
BaseRepresentation
bin10111101100001101…
…10011011100101101
31012211101212202000220
423312012303130231
5202022020211300
65502030241553
7630120656646
oct136606633455
935741782026
1012718913325
115437549918
12256b6562b9
131279096821
148892ba6cd
154e692bda0
hex2f61b372d

12718913325 has 12 divisors (see below), whose sum is σ = 21028603488. Its totient is φ = 6783420400.

The previous prime is 12718913323. The next prime is 12718913353. The reversal of 12718913325 is 52331981721.

It is not a de Polignac number, because 12718913325 - 21 = 12718913323 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12718913321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84792681 + ... + 84792830.

It is an arithmetic number, because the mean of its divisors is an integer number (1752383624).

Almost surely, 212718913325 is an apocalyptic number.

12718913325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12718913325 is a deficient number, since it is larger than the sum of its proper divisors (8309690163).

12718913325 is a wasteful number, since it uses less digits than its factorization.

12718913325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169585524 (or 169585519 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The spelling of 12718913325 in words is "twelve billion, seven hundred eighteen million, nine hundred thirteen thousand, three hundred twenty-five".

Divisors: 1 3 5 15 25 75 169585511 508756533 847927555 2543782665 4239637775 12718913325