2505505797 has 16 divisors (see below), whose sum is σ = 3747902080. Its totient is φ = 1654118496.

The previous prime is 2505505789. The next prime is 2505505799. The reversal of 2505505797 is 7975055052.

2505505797 is a `hidden beast` number, since 2 + 5 + 0 + 550 + 5 + 7 + 97 = 666.

2505505797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2505505797 - 2³ = 2505505789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505505799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447688 + ... + 453249.

It is an arithmetic number, because the mean of its divisors is an integer number (234243880).

Almost surely, 2^2505505797 is an apocalyptic number.

2505505797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2505505797 is a deficient number, since it is larger than the sum of its proper divisors (1242396283).

2505505797 is a wasteful number, since it uses less digits than its factorization.

2505505797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901049 (or 901043 counting only the distinct ones).

The product of its (nonzero) digits is 551250, while the sum is 45.

The square root of 2505505797 is about 50055.0276895338. The cubic root of 2505505797 is about 1358.2044132663.

The spelling of 2505505797 in words is "two billion, five hundred five million, five hundred five thousand, seven hundred ninety-seven".