Base | Representation |
---|---|
bin | 101111111101… |
… | …0001010101011 |
3 | 1202022100020122 |
4 | 1133322022223 |
5 | 22414020211 |
6 | 2254513455 |
7 | 423463043 |
oct | 137721253 |
9 | 52270218 |
10 | 25141931 |
11 | 13212561 |
12 | 850588b |
13 | 52939a9 |
14 | 34a6723 |
15 | 23196db |
hex | 17fa2ab |
25141931 has 2 divisors, whose sum is σ = 25141932. Its totient is φ = 25141930.
The previous prime is 25141901. The next prime is 25141957. The reversal of 25141931 is 13914152.
It is an a-pointer prime, because the next prime (25141957) can be obtained adding 25141931 to its sum of digits (26).
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 25141931 - 26 = 25141867 is a prime.
It is a super-2 number, since 2×251419312 = 1264233388817522, which contains 22 as substring.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 25141931.
It is not a weakly prime, because it can be changed into another prime (25141901) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12570965 + 12570966.
It is an arithmetic number, because the mean of its divisors is an integer number (12570966).
Almost surely, 225141931 is an apocalyptic number.
25141931 is a deficient number, since it is larger than the sum of its proper divisors (1).
25141931 is an equidigital number, since it uses as much as digits as its factorization.
25141931 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1080, while the sum is 26.
The square root of 25141931 is about 5014.1730125715. The cubic root of 25141931 is about 292.9540749696.
The spelling of 25141931 in words is "twenty-five million, one hundred forty-one thousand, nine hundred thirty-one".
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