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280083125 = 54764019
BaseRepresentation
bin10000101100011…
…011101010110101
3201112000200211002
4100230123222311
51033200130000
643443053045
76640444610
oct2054335265
9645020732
10280083125
11134110663
1279971185
134604647a
14292ab177
15198c78d5
hex10b1bab5

280083125 has 20 divisors (see below), whose sum is σ = 399996960. Its totient is φ = 192054000.

The previous prime is 280083113. The next prime is 280083127. The reversal of 280083125 is 521380082.

It is not a de Polignac number, because 280083125 - 26 = 280083061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280083127) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27635 + ... + 36384.

It is an arithmetic number, because the mean of its divisors is an integer number (19999848).

Almost surely, 2280083125 is an apocalyptic number.

280083125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

280083125 is a deficient number, since it is larger than the sum of its proper divisors (119913835).

280083125 is an frugal number, since it uses more digits than its factorization.

280083125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64046 (or 64031 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 280083125 is about 16735.6841808156. The cubic root of 280083125 is about 654.2779954863.

The spelling of 280083125 in words is "two hundred eighty million, eighty-three thousand, one hundred twenty-five".

Divisors: 1 5 7 25 35 125 175 625 875 4375 64019 320095 448133 1600475 2240665 8002375 11203325 40011875 56016625 280083125