2505918 has 16 divisors (see below), whose sum is σ = 5035536. Its totient is φ = 831360.

The previous prime is 2505917. The next prime is 2505983. The reversal of 2505918 is 8195052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505917) 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 7 ways as a sum of consecutive naturals, for example, 580 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (314721).

2^2505918 is an apocalyptic number.

2505918 is an abundant number, since it is smaller than the sum of its proper divisors (2529618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2505918 is a wasteful number, since it uses less digits than its factorization.

2505918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 2505918 is about 1583.0091597966. The cubic root of 2505918 is about 135.8278892604.

The spelling of 2505918 in words is "two million, five hundred five thousand, nine hundred eighteen".