2505611317 has 8 divisors (see below), whose sum is σ = 2894182272. Its totient is φ = 2143838400.

The previous prime is 2505611309. The next prime is 2505611327. The reversal of 2505611317 is 7131165052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2505611317 - 2³ = 2505611309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505611327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6699309 + ... + 6699682.

It is an arithmetic number, because the mean of its divisors is an integer number (361772784).

Almost surely, 2^2505611317 is an apocalyptic number.

It is an amenable number.

2505611317 is a deficient number, since it is larger than the sum of its proper divisors (388570955).

2505611317 is a wasteful number, since it uses less digits than its factorization.

2505611317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13399019.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 2505611317 is about 50056.0817184086. The cubic root of 2505611317 is about 1358.2234800375.

Adding to 2505611317 its reverse (7131165052), we get a palindrome (9636776369).

The spelling of 2505611317 in words is "two billion, five hundred five million, six hundred eleven thousand, three hundred seventeen".