2505527779 has 16 divisors (see below), whose sum is σ = 2765324448. Its totient is φ = 2260127232.

The previous prime is 2505527767. The next prime is 2505527809. The reversal of 2505527779 is 9777255052.

It is a cyclic number.

It is not a de Polignac number, because 2505527779 - 2⁹ = 2505527267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2505527719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12417 + ... + 71869.

It is an arithmetic number, because the mean of its divisors is an integer number (172832778).

Almost surely, 2^2505527779 is an apocalyptic number.

2505527779 is a deficient number, since it is larger than the sum of its proper divisors (259796669).

2505527779 is a wasteful number, since it uses less digits than its factorization.

2505527779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59574.

The product of its (nonzero) digits is 1543500, while the sum is 49.

The square root of 2505527779 is about 50055.2472673945. The cubic root of 2505527779 is about 1358.2083853135.

The spelling of 2505527779 in words is "two billion, five hundred five million, five hundred twenty-seven thousand, seven hundred seventy-nine".