Base | Representation |
---|---|
bin | 111100111000100010001 |
3 | 10202100122211 |
4 | 13213010101 |
5 | 1002320100 |
6 | 110432121 |
7 | 22646254 |
oct | 7470421 |
9 | 3670584 |
10 | 1995025 |
11 | 114298a |
12 | 802641 |
13 | 54b0b6 |
14 | 39d09b |
15 | 2961ba |
hex | 1e7111 |
1995025 has 6 divisors (see below), whose sum is σ = 2473862. Its totient is φ = 1596000.
The previous prime is 1995023. The next prime is 1995031. The reversal of 1995025 is 5205991.
It can be written as a sum of positive squares in 3 ways, for example, as 15376 + 1979649 = 124^2 + 1407^2 .
It is not a de Polignac number, because 1995025 - 21 = 1995023 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1995023) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39876 + ... + 39925.
21995025 is an apocalyptic number.
It is an amenable number.
1995025 is a deficient number, since it is larger than the sum of its proper divisors (478837).
1995025 is an equidigital number, since it uses as much as digits as its factorization.
1995025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 79811 (or 79806 counting only the distinct ones).
The product of its (nonzero) digits is 4050, while the sum is 31.
The square root of 1995025 is about 1412.4535390589. The cubic root of 1995025 is about 125.8875497941.
The spelling of 1995025 in words is "one million, nine hundred ninety-five thousand, twenty-five".
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