2856125 has 16 divisors (see below), whose sum is σ = 3624816. Its totient is φ = 2246400.

The previous prime is 2856121. The next prime is 2856149. The reversal of 2856125 is 5216582.

It can be written as a sum of positive squares in 8 ways, for example, as 1819801 + 1036324 = 1349^2 + 1018^2 .

It is not a de Polignac number, because 2856125 - 2² = 2856121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856121) 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 15 ways as a sum of consecutive naturals, for example, 8969 + ... + 9281.

It is an arithmetic number, because the mean of its divisors is an integer number (226551).

2^2856125 is an apocalyptic number.

2856125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2856125 is a deficient number, since it is larger than the sum of its proper divisors (768691).

2856125 is an equidigital number, since it uses as much as digits as its factorization.

2856125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 391 counting only the distinct ones).

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

The square root of 2856125 is about 1690.0073964335. The cubic root of 2856125 is about 141.8814887676.

It can be divided in two parts, 28561 and 25, that multiplied together give a square (714025 = 845²).

The spelling of 2856125 in words is "two million, eight hundred fifty-six thousand, one hundred twenty-five".