Base | Representation |
---|---|
bin | 1001100110010… |
… | …00010000011001 |
3 | 12121111102201212 |
4 | 10303020100121 |
5 | 131102341100 |
6 | 11553352505 |
7 | 1665224636 |
oct | 463102031 |
9 | 177442655 |
10 | 80512025 |
11 | 414a0970 |
12 | 22b68735 |
13 | 138ac469 |
14 | a99b18d |
15 | 7105635 |
hex | 4cc8419 |
80512025 has 36 divisors (see below), whose sum is σ = 115086384. Its totient is φ = 55404000.
The previous prime is 80512013. The next prime is 80512027. The reversal of 80512025 is 52021508.
It is not a de Polignac number, because 80512025 - 26 = 80511961 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (80512027) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 98870 + ... + 99680.
It is an arithmetic number, because the mean of its divisors is an integer number (3196844).
Almost surely, 280512025 is an apocalyptic number.
It is an amenable number.
80512025 is a deficient number, since it is larger than the sum of its proper divisors (34574359).
80512025 is a wasteful number, since it uses less digits than its factorization.
80512025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 870 (or 846 counting only the distinct ones).
The product of its (nonzero) digits is 800, while the sum is 23.
The square root of 80512025 is about 8972.8493244900. The cubic root of 80512025 is about 431.8042540962.
The spelling of 80512025 in words is "eighty million, five hundred twelve thousand, twenty-five".
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