2505664513 has 8 divisors (see below), whose sum is σ = 2737724256. Its totient is φ = 2274316800.

The previous prime is 2505664439. The next prime is 2505664523. The reversal of 2505664513 is 3154665052.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2505664513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505664523) 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, 170631 + ... + 184732.

It is an arithmetic number, because the mean of its divisors is an integer number (342215532).

Almost surely, 2^2505664513 is an apocalyptic number.

It is an amenable number.

2505664513 is a deficient number, since it is larger than the sum of its proper divisors (232059743).

2505664513 is a wasteful number, since it uses less digits than its factorization.

2505664513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356015.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 2505664513 is about 50056.6130795922. The cubic root of 2505664513 is about 1358.2330920025.

The spelling of 2505664513 in words is "two billion, five hundred five million, six hundred sixty-four thousand, five hundred thirteen".