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25250080008 = 23317355917389
BaseRepresentation
bin10111100001000001…
…011010010100001000
32102011201110222002110
4113201001122110020
5403203010030013
615333312502320
71552502065416
oct274101322410
972151428073
1025250080008
11a78801491a
124a8824a9a0
1324c52a645a
1413176842b6
159cbb202c3
hex5e105a508

25250080008 has 64 divisors (see below), whose sum is σ = 66861072000. Its totient is φ = 7918912512.

The previous prime is 25250080007. The next prime is 25250080019. The reversal of 25250080008 is 80008005252.

It is not an unprimeable number, because it can be changed into a prime (25250080007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1443378 + ... + 1460766.

It is an arithmetic number, because the mean of its divisors is an integer number (1044704250).

Almost surely, 225250080008 is an apocalyptic number.

It is an amenable number.

25250080008 is an abundant number, since it is smaller than the sum of its proper divisors (41610991992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25250080008 is a wasteful number, since it uses less digits than its factorization.

25250080008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20974 (or 20970 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 25250080008 in words is "twenty-five billion, two hundred fifty million, eighty thousand, eight".

Divisors: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 3559 7118 10677 14236 17389 21354 28472 34778 42708 52167 60503 69556 85416 104334 121006 139112 181509 208668 242012 295613 363018 417336 484024 591226 726036 886839 1182452 1452072 1773678 2364904 3547356 7094712 61887451 123774902 185662353 247549804 371324706 495099608 742649412 1052086667 1485298824 2104173334 3156260001 4208346668 6312520002 8416693336 12625040004 25250080008