2505740 has 12 divisors (see below), whose sum is σ = 5262096. Its totient is φ = 1002288.

The previous prime is 2505707. The next prime is 2505743. The reversal of 2505740 is 475052.

It is not an unprimeable number, because it can be changed into a prime (2505743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62624 + ... + 62663.

It is an arithmetic number, because the mean of its divisors is an integer number (438508).

2^2505740 is an apocalyptic number.

2505740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2505740 is an abundant number, since it is smaller than the sum of its proper divisors (2756356).

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

2505740 is a wasteful number, since it uses less digits than its factorization.

2505740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125296 (or 125294 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 2505740 is about 1582.9529367609. The cubic root of 2505740 is about 135.8246731486.

The spelling of 2505740 in words is "two million, five hundred five thousand, seven hundred forty".