Base | Representation |
---|---|
bin | 100101010010010010… |
… | …1100011101000011001 |
3 | 21122200021012000122011 |
4 | 1022210211203220121 |
5 | 2302441101020100 |
6 | 100441201225521 |
7 | 5533140614302 |
oct | 1124445435031 |
9 | 248607160564 |
10 | 80070720025 |
11 | 30a5991a08a |
12 | 136276322a1 |
13 | 772099629a |
14 | 3c383077a9 |
15 | 21397dcbba |
hex | 12a4963a19 |
80070720025 has 24 divisors (see below), whose sum is σ = 99659079000. Its totient is φ = 63817420800.
The previous prime is 80070720017. The next prime is 80070720029. The reversal of 80070720025 is 52002707008.
It can be written as a sum of positive squares in 12 ways, for example, as 29174006416 + 50896713609 = 170804^2 + 225603^2 .
It is not a de Polignac number, because 80070720025 - 23 = 80070720017 is a prime.
It is a super-2 number, since 2×800707200252 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (80070720029) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7953495 + ... + 7963555.
It is an arithmetic number, because the mean of its divisors is an integer number (4152461625).
Almost surely, 280070720025 is an apocalyptic number.
It is an amenable number.
80070720025 is a deficient number, since it is larger than the sum of its proper divisors (19588358975).
80070720025 is a wasteful number, since it uses less digits than its factorization.
80070720025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11229 (or 11224 counting only the distinct ones).
The product of its (nonzero) digits is 7840, while the sum is 31.
The spelling of 80070720025 in words is "eighty billion, seventy million, seven hundred twenty thousand, twenty-five".
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