Base | Representation |
---|---|
bin | 111010010011101101… |
… | …0001000011001001010 |
3 | 102222012110111212222022 |
4 | 1310213122020121022 |
5 | 4022420043310010 |
6 | 133304552324442 |
7 | 12021643515260 |
oct | 1644732103112 |
9 | 388173455868 |
10 | 125215213130 |
11 | 491157a5a17 |
12 | 203263a3722 |
13 | ba667c88b7 |
14 | 60bbc2a430 |
15 | 33ccc6dd55 |
hex | 1d2768864a |
125215213130 has 32 divisors (see below), whose sum is σ = 266467847040. Its totient is φ = 41450552640.
The previous prime is 125215213061. The next prime is 125215213171. The reversal of 125215213130 is 31312512521.
It is a self number, because there is not a number n which added to its sum of digits gives 125215213130.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30839156 + ... + 30843215.
It is an arithmetic number, because the mean of its divisors is an integer number (8327120220).
Almost surely, 2125215213130 is an apocalyptic number.
125215213130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
125215213130 is an abundant number, since it is smaller than the sum of its proper divisors (141252633910).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
125215213130 is a wasteful number, since it uses less digits than its factorization.
125215213130 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 61682414.
The product of its (nonzero) digits is 1800, while the sum is 26.
Adding to 125215213130 its reverse (31312512521), we get a palindrome (156527725651).
The spelling of 125215213130 in words is "one hundred twenty-five billion, two hundred fifteen million, two hundred thirteen thousand, one hundred thirty".
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