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7125065 = 51817873
BaseRepresentation
bin11011001011100001001001
3111101222202022
4123023201021
53311000230
6412414225
7114363533
oct33134111
914358668
107125065
114027192
122477375
13162611c
14d36853
1595b1e5
hex6cb849

7125065 has 8 divisors (see below), whose sum is σ = 8598408. Its totient is φ = 5667840.

The previous prime is 7125061. The next prime is 7125067. The reversal of 7125065 is 5605217.

It can be written as a sum of positive squares in 4 ways, for example, as 719104 + 6405961 = 848^2 + 2531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7125065 - 22 = 7125061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7125061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3032 + ... + 4841.

It is an arithmetic number, because the mean of its divisors is an integer number (1074801).

Almost surely, 27125065 is an apocalyptic number.

It is an amenable number.

7125065 is a deficient number, since it is larger than the sum of its proper divisors (1473343).

7125065 is a wasteful number, since it uses less digits than its factorization.

7125065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8059.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 7125065 is about 2669.2817385956. The cubic root of 7125065 is about 192.4256417143.

The spelling of 7125065 in words is "seven million, one hundred twenty-five thousand, sixty-five".

Divisors: 1 5 181 905 7873 39365 1425013 7125065