2605025539 has 2 divisors, whose sum is σ = 2605025540. Its totient is φ = 2605025538.

The previous prime is 2605025537. The next prime is 2605025551. The reversal of 2605025539 is 9355205062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2605025539 - 2¹ = 2605025537 is a prime.

Together with 2605025537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2605025498 and 2605025507.

It is not a weakly prime, because it can be changed into another prime (2605025537) 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 as a sum of consecutive naturals, namely, 1302512769 + 1302512770.

It is an arithmetic number, because the mean of its divisors is an integer number (1302512770).

Almost surely, 2^2605025539 is an apocalyptic number.

2605025539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605025539 is an equidigital number, since it uses as much as digits as its factorization.

2605025539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 2605025539 is about 51039.4508101331. The cubic root of 2605025539 is about 1375.9542535593.

The spelling of 2605025539 in words is "two billion, six hundred five million, twenty-five thousand, five hundred thirty-nine".