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8071225645 = 57230606447
BaseRepresentation
bin1111000010001010…
…10010000100101101
3202211111102202010011
413201011102010231
5113012213210040
63412522213221
7404004200050
oct74105220455
922744382104
108071225645
113471aa631a
121693054211
139b8220782
14567d28a97
153238b93ea
hex1e115212d

8071225645 has 8 divisors (see below), whose sum is σ = 11069109504. Its totient is φ = 5534554704.

The previous prime is 8071225639. The next prime is 8071225649. The reversal of 8071225645 is 5465221708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8071225645 - 211 = 8071223597 is a prime.

It is a super-3 number, since 3×80712256453 (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8071225598 and 8071225607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8071225649) 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, 115303189 + ... + 115303258.

It is an arithmetic number, because the mean of its divisors is an integer number (1383638688).

Almost surely, 28071225645 is an apocalyptic number.

It is an amenable number.

8071225645 is a deficient number, since it is larger than the sum of its proper divisors (2997883859).

8071225645 is a wasteful number, since it uses less digits than its factorization.

8071225645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230606459.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 8071225645 is about 89840.0002504452. Note that the first 3 decimals coincide. The cubic root of 8071225645 is about 2005.9179421256.

The spelling of 8071225645 in words is "eight billion, seventy-one million, two hundred twenty-five thousand, six hundred forty-five".

Divisors: 1 5 7 35 230606447 1153032235 1614245129 8071225645