2505878 has 8 divisors (see below), whose sum is σ = 3771768. Its totient is φ = 1248624.

The previous prime is 2505863. The next prime is 2505901. The reversal of 2505878 is 8785052.

2505878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an alternating number because its digits alternate between even and odd.

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 3 ways as a sum of consecutive naturals, for example, 1376 + ... + 2627.

It is an arithmetic number, because the mean of its divisors is an integer number (471471).

2^2505878 is an apocalyptic number.

2505878 is a deficient number, since it is larger than the sum of its proper divisors (1265890).

2505878 is a wasteful number, since it uses less digits than its factorization.

2505878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4318.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 2505878 is about 1582.9965255805. The cubic root of 2505878 is about 135.8271665519.

The spelling of 2505878 in words is "two million, five hundred five thousand, eight hundred seventy-eight".