Search a number
-
+
8256125 = 532572
BaseRepresentation
bin11111011111101001111101
3120112110021102
4133133221331
54103144000
6452542445
7130114223
oct37375175
916473242
108256125
114729a49
122921a25
131930ba7
14114cb13
15ad13d5
hex7dfa7d

8256125 has 12 divisors (see below), whose sum is σ = 10343892. Its totient is φ = 6579200.

The previous prime is 8256109. The next prime is 8256139. The reversal of 8256125 is 5216528.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 24964 + 8231161 = 158^2 + 2869^2 .

It is not a de Polignac number, because 8256125 - 24 = 8256109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31997 + ... + 32253.

It is an arithmetic number, because the mean of its divisors is an integer number (861991).

Almost surely, 28256125 is an apocalyptic number.

It is an amenable number.

8256125 is a deficient number, since it is larger than the sum of its proper divisors (2087767).

8256125 is an frugal number, since it uses more digits than its factorization.

8256125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 262 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 8256125 is about 2873.3473510872. The cubic root of 8256125 is about 202.1119939039. Note that the first 3 decimals are identical.

The spelling of 8256125 in words is "eight million, two hundred fifty-six thousand, one hundred twenty-five".

Divisors: 1 5 25 125 257 1285 6425 32125 66049 330245 1651225 8256125