2505301663 has 4 divisors (see below), whose sum is σ = 2506538440. Its totient is φ = 2504064888.

The previous prime is 2505301637. The next prime is 2505301691. The reversal of 2505301663 is 3661035052.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2505301663 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 (2505371663) 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, 615345 + ... + 619402.

It is an arithmetic number, because the mean of its divisors is an integer number (626634610).

Almost surely, 2^2505301663 is an apocalyptic number.

2505301663 is a deficient number, since it is larger than the sum of its proper divisors (1236777).

2505301663 is a wasteful number, since it uses less digits than its factorization.

2505301663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236776.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 2505301663 is about 50052.9885521334. The cubic root of 2505301663 is about 1358.1675260730.

The spelling of 2505301663 in words is "two billion, five hundred five million, three hundred one thousand, six hundred sixty-three".