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12883745125 = 53313329297
BaseRepresentation
bin10111111111110111…
…00101100101100101
31020020220001001202101
423333323211211211
5202341214321000
65530235212101
7634162012066
oct137773454545
936226031671
1012883745125
1155115a1449
1225b68a7031
1312a4289634
148a314656d
1550613ae6a
hex2ffee5965

12883745125 has 16 divisors (see below), whose sum is σ = 16130333232. Its totient is φ = 10274035200.

The previous prime is 12883745071. The next prime is 12883745141. The reversal of 12883745125 is 52154738821.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10721774116 + 2161971009 = 103546^2 + 46497^2 .

It is not a de Polignac number, because 12883745125 - 213 = 12883736933 is a prime.

It is a super-2 number, since 2×128837451252 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125524 + ... + 203773.

It is an arithmetic number, because the mean of its divisors is an integer number (1008145827).

Almost surely, 212883745125 is an apocalyptic number.

It is an amenable number.

12883745125 is a deficient number, since it is larger than the sum of its proper divisors (3246588107).

12883745125 is an equidigital number, since it uses as much as digits as its factorization.

12883745125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329625 (or 329615 counting only the distinct ones).

The product of its digits is 537600, while the sum is 46.

The spelling of 12883745125 in words is "twelve billion, eight hundred eighty-three million, seven hundred forty-five thousand, one hundred twenty-five".

Divisors: 1 5 25 125 313 1565 7825 39125 329297 1646485 8232425 41162125 103069961 515349805 2576749025 12883745125