2578825 has 12 divisors (see below), whose sum is σ = 3308940. Its totient is φ = 1991360.

The previous prime is 2578819. The next prime is 2578837. The reversal of 2578825 is 5288752.

2578825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 292681 + 2286144 = 541^2 + 1512^2 .

It is not a de Polignac number, because 2578825 - 2³ = 2578817 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1054 + ... + 2503.

It is an arithmetic number, because the mean of its divisors is an integer number (275745).

2^2578825 is an apocalyptic number.

2578825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2578825 is a deficient number, since it is larger than the sum of its proper divisors (730115).

2578825 is a wasteful number, since it uses less digits than its factorization.

2578825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596 (or 3591 counting only the distinct ones).

The product of its digits is 44800, while the sum is 37.

The square root of 2578825 is about 1605.8720372433. The cubic root of 2578825 is about 137.1325727552.

It can be divided in two parts, 2578 and 825, that added together give a triangular number (3403 = T₈₂).

The spelling of 2578825 in words is "two million, five hundred seventy-eight thousand, eight hundred twenty-five".