2505922949 has 2 divisors, whose sum is σ = 2505922950. Its totient is φ = 2505922948.

The previous prime is 2505922921. The next prime is 2505922963. The reversal of 2505922949 is 9492295052.

2505922949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1289169025 + 1216753924 = 35905^2 + 34882^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505922949 - 2⁸ = 2505922693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505922999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252961474 + 1252961475.

It is an arithmetic number, because the mean of its divisors is an integer number (1252961475).

Almost surely, 2^2505922949 is an apocalyptic number.

It is an amenable number.

2505922949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505922949 is an equidigital number, since it uses as much as digits as its factorization.

2505922949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 47.

The square root of 2505922949 is about 50059.1944501707. The cubic root of 2505922949 is about 1358.2797867693.

The spelling of 2505922949 in words is "two billion, five hundred five million, nine hundred twenty-two thousand, nine hundred forty-nine".