2605702540 has 48 divisors (see below), whose sum is σ = 6621556032. Its totient is φ = 840830976.

The previous prime is 2605702537. The next prime is 2605702559. The reversal of 2605702540 is 452075062.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545037 + ... + 549796.

It is an arithmetic number, because the mean of its divisors is an integer number (137949084).

Almost surely, 2^2605702540 is an apocalyptic number.

2605702540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605702540 is an abundant number, since it is smaller than the sum of its proper divisors (4015853492).

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

2605702540 is a wasteful number, since it uses less digits than its factorization.

2605702540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094866 (or 1094864 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 2605702540 is about 51046.0825137444. The cubic root of 2605702540 is about 1376.0734387916.

The spelling of 2605702540 in words is "two billion, six hundred five million, seven hundred two thousand, five hundred forty".