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8125084540 = 2251093727103
BaseRepresentation
bin1111001000100101…
…01111001101111100
3202222020210001122001
413210102233031330
5113120010201130
63422124432044
7405230036056
oct74422571574
922866701561
108125084540
11349a442301
1216a90a8624
139c642a441
145711488d6
153284a76ca
hex1e44af37c

8125084540 has 24 divisors (see below), whose sum is σ = 17219220480. Its totient is φ = 3220216128.

The previous prime is 8125084529. The next prime is 8125084547. The reversal of 8125084540 is 454805218.

It is a self number, because there is not a number n which added to its sum of digits gives 8125084540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8125084547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1861372 + ... + 1865731.

It is an arithmetic number, because the mean of its divisors is an integer number (717467520).

Almost surely, 28125084540 is an apocalyptic number.

It is an amenable number.

8125084540 is an abundant number, since it is smaller than the sum of its proper divisors (9094135940).

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

8125084540 is a wasteful number, since it uses less digits than its factorization.

8125084540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727221 (or 3727219 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 37.

The square root of 8125084540 is about 90139.2508289258. The cubic root of 8125084540 is about 2010.3698518274.

Adding to 8125084540 its reverse (454805218), we get a palindrome (8579889758).

The spelling of 8125084540 in words is "eight billion, one hundred twenty-five million, eighty-four thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 3727103 7454206 14908412 18635515 37271030 74542060 406254227 812508454 1625016908 2031271135 4062542270 8125084540