2505830 has 8 divisors (see below), whose sum is σ = 4510512. Its totient is φ = 1002328.

The previous prime is 2505829. The next prime is 2505847. The reversal of 2505830 is 385052.

2505830 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 Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2505796 and 2505805.

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, 125282 + ... + 125301.

It is an arithmetic number, because the mean of its divisors is an integer number (563814).

2^2505830 is an apocalyptic number.

2505830 is a deficient number, since it is larger than the sum of its proper divisors (2004682).

2505830 is a wasteful number, since it uses less digits than its factorization.

2505830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250590.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2505830 is about 1582.9813643881. The cubic root of 2505830 is about 135.8262992916.

The spelling of 2505830 in words is "two million, five hundred five thousand, eight hundred thirty".