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8260725 = 35211171931
BaseRepresentation
bin11111100000110001110101
3120112200120210
4133200301311
54103320400
6453020033
7130133514
oct37406165
916480523
108260725
114732450
122924619
131933005
14115067b
15ad2950
hex7e0c75

8260725 has 96 divisors (see below), whose sum is σ = 17141760. Its totient is φ = 3456000.

The previous prime is 8260723. The next prime is 8260771. The reversal of 8260725 is 5270628.

8260725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8260725 - 21 = 8260723 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8260692 and 8260701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8260723) 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 95 ways as a sum of consecutive naturals, for example, 266460 + ... + 266490.

It is an arithmetic number, because the mean of its divisors is an integer number (178560).

Almost surely, 28260725 is an apocalyptic number.

8260725 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8260725 is an abundant number, since it is smaller than the sum of its proper divisors (8881035).

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

8260725 is a wasteful number, since it uses less digits than its factorization.

8260725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 8260725 is about 2874.1476997538. The cubic root of 8260725 is about 202.1495233162.

The spelling of 8260725 in words is "eight million, two hundred sixty thousand, seven hundred twenty-five".

Divisors: 1 3 5 11 15 17 19 25 31 33 51 55 57 75 85 93 95 155 165 187 209 255 275 285 323 341 425 465 475 527 561 589 627 775 825 935 969 1023 1045 1275 1425 1581 1615 1705 1767 2325 2635 2805 2945 3135 3553 4675 4845 5115 5225 5797 6479 7905 8075 8525 8835 10013 10659 13175 14025 14725 15675 17391 17765 19437 24225 25575 28985 30039 32395 39525 44175 50065 53295 86955 88825 97185 110143 144925 150195 161975 250325 266475 330429 434775 485925 550715 750975 1652145 2753575 8260725