2505550505 has 4 divisors (see below), whose sum is σ = 3006660612. Its totient is φ = 2004440400.

The previous prime is 2505550483. The next prime is 2505550507. The reversal of 2505550505 is 5050555052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 287234704 + 2218315801 = 16948^2 + 47099^2 .

It is not a de Polignac number, because 2505550505 - 2¹⁴ = 2505534121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505550507) 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 3 ways as a sum of consecutive naturals, for example, 250555046 + ... + 250555055.

It is an arithmetic number, because the mean of its divisors is an integer number (751665153).

Almost surely, 2^2505550505 is an apocalyptic number.

It is an amenable number.

2505550505 is a deficient number, since it is larger than the sum of its proper divisors (501110107).

2505550505 is an equidigital number, since it uses as much as digits as its factorization.

2505550505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501110106.

The product of its (nonzero) digits is 31250, while the sum is 32.

The square root of 2505550505 is about 50055.4742760470. The cubic root of 2505550505 is about 1358.2124917737.

The spelling of 2505550505 in words is "two billion, five hundred five million, five hundred fifty thousand, five hundred five".