Base | Representation |
---|---|
bin | 101111111001… |
… | …001101110101 |
3 | 212121212101122 |
4 | 233321031311 |
5 | 11203231000 |
6 | 1125033325 |
7 | 211500602 |
oct | 57711565 |
9 | 25555348 |
10 | 12555125 |
11 | 70a5940 |
12 | 4255845 |
13 | 27a788b |
14 | 194b6a9 |
15 | 1180085 |
hex | bf9375 |
12555125 has 32 divisors (see below), whose sum is σ = 17881344. Its totient is φ = 8712000.
The previous prime is 12555121. The next prime is 12555149. The reversal of 12555125 is 52155521.
It is not a de Polignac number, because 12555125 - 22 = 12555121 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12555094 and 12555103.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12555121) 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, 31427 + ... + 31823.
It is an arithmetic number, because the mean of its divisors is an integer number (558792).
Almost surely, 212555125 is an apocalyptic number.
It is an amenable number.
12555125 is a deficient number, since it is larger than the sum of its proper divisors (5326219).
12555125 is a wasteful number, since it uses less digits than its factorization.
12555125 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 446 (or 436 counting only the distinct ones).
The product of its digits is 2500, while the sum is 26.
The square root of 12555125 is about 3543.3211821679. The cubic root of 12555125 is about 232.4200981845.
It can be divided in two parts, 125 and 55125, that multiplied together give a square (6890625 = 26252).
The spelling of 12555125 in words is "twelve million, five hundred fifty-five thousand, one hundred twenty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •