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12231525125 = 5397852201
BaseRepresentation
bin10110110010000111…
…00100001100000101
31011120102202212010002
423121003210030011
5200022232301000
65341420011045
7612052151051
oct133103441405
934512685102
1012231525125
115207416956
122454390a85
1311cc109041
14840688c61
154b8c558d5
hex2d90e4305

12231525125 has 8 divisors (see below), whose sum is σ = 15264943512. Its totient is φ = 9785220000.

The previous prime is 12231525077. The next prime is 12231525127. The reversal of 12231525125 is 52152513221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 96079204 + 12135445921 = 9802^2 + 110161^2 .

It is not a de Polignac number, because 12231525125 - 28 = 12231524869 is a prime.

It is a super-3 number, since 3×122315251253 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231525127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48925976 + ... + 48926225.

It is an arithmetic number, because the mean of its divisors is an integer number (1908117939).

Almost surely, 212231525125 is an apocalyptic number.

It is an amenable number.

12231525125 is a deficient number, since it is larger than the sum of its proper divisors (3033418387).

12231525125 is an frugal number, since it uses more digits than its factorization.

12231525125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97852216 (or 97852206 counting only the distinct ones).

The product of its digits is 6000, while the sum is 29.

The spelling of 12231525125 in words is "twelve billion, two hundred thirty-one million, five hundred twenty-five thousand, one hundred twenty-five".

Divisors: 1 5 25 125 97852201 489261005 2446305025 12231525125