2505566507 has 4 divisors (see below), whose sum is σ = 2505671400. Its totient is φ = 2505461616.

The previous prime is 2505566431. The next prime is 2505566509. The reversal of 2505566507 is 7056655052.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2505566507 - 2⁸ = 2505566251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505566509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2744 + ... + 70842.

It is an arithmetic number, because the mean of its divisors is an integer number (626417850).

Almost surely, 2^2505566507 is an apocalyptic number.

2505566507 is a deficient number, since it is larger than the sum of its proper divisors (104893).

2505566507 is an equidigital number, since it uses as much as digits as its factorization.

2505566507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104892.

The product of its (nonzero) digits is 315000, while the sum is 41.

The square root of 2505566507 is about 50055.6341184486. The cubic root of 2505566507 is about 1358.2153832301.

The spelling of 2505566507 in words is "two billion, five hundred five million, five hundred sixty-six thousand, five hundred seven".