2878825 has 6 divisors (see below), whose sum is σ = 3569774. Its totient is φ = 2303040.

The previous prime is 2878819. The next prime is 2878847. The reversal of 2878825 is 5288782.

It can be written as a sum of positive squares in 3 ways, for example, as 404496 + 2474329 = 636^2 + 1573^2 .

It is not a de Polignac number, because 2878825 - 2⁵ = 2878793 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 5 ways as a sum of consecutive naturals, for example, 57552 + ... + 57601.

2^2878825 is an apocalyptic number.

2878825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2878825 is a deficient number, since it is larger than the sum of its proper divisors (690949).

2878825 is a wasteful number, since it uses less digits than its factorization.

2878825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115163 (or 115158 counting only the distinct ones).

The product of its digits is 71680, while the sum is 40.

The square root of 2878825 is about 1696.7100518356. The cubic root of 2878825 is about 142.2563807068.

The spelling of 2878825 in words is "two million, eight hundred seventy-eight thousand, eight hundred twenty-five".