Base | Representation |
---|---|
bin | 101111111110… |
… | …0101010000011 |
3 | 1202022212020102 |
4 | 1133330222003 |
5 | 22414332011 |
6 | 2255033015 |
7 | 423534554 |
oct | 137745203 |
9 | 52285212 |
10 | 25152131 |
11 | 1321a194 |
12 | 850b76b |
13 | 5298524 |
14 | 34aa32b |
15 | 231c73b |
hex | 17fca83 |
25152131 has 8 divisors (see below), whose sum is σ = 25608528. Its totient is φ = 24700000.
The previous prime is 25152109. The next prime is 25152137. The reversal of 25152131 is 13125152.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 25152131 - 210 = 25151107 is a prime.
It is a super-2 number, since 2×251521312 = 1265259387682322, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (25152137) 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, 12281 + ... + 14181.
It is an arithmetic number, because the mean of its divisors is an integer number (3201066).
Almost surely, 225152131 is an apocalyptic number.
25152131 is a deficient number, since it is larger than the sum of its proper divisors (456397).
25152131 is a wasteful number, since it uses less digits than its factorization.
25152131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2133.
The product of its digits is 300, while the sum is 20.
The square root of 25152131 is about 5015.1900263101. The cubic root of 25152131 is about 292.9936864532.
Adding to 25152131 its reverse (13125152), we get a palindrome (38277283).
The spelling of 25152131 in words is "twenty-five million, one hundred fifty-two thousand, one hundred thirty-one".
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