2505002779 has 2 divisors, whose sum is σ = 2505002780. Its totient is φ = 2505002778.

The previous prime is 2505002743. The next prime is 2505002809. The reversal of 2505002779 is 9772005052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2505002779 - 2⁹ = 2505002267 is a prime.

It is not a weakly prime, because it can be changed into another prime (2505002729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252501389 + 1252501390.

It is an arithmetic number, because the mean of its divisors is an integer number (1252501390).

Almost surely, 2^2505002779 is an apocalyptic number.

2505002779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505002779 is an equidigital number, since it uses as much as digits as its factorization.

2505002779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 2505002779 is about 50050.0027872127. The cubic root of 2505002779 is about 1358.1135138566.

The spelling of 2505002779 in words is "two billion, five hundred five million, two thousand, seven hundred seventy-nine".