2505163601 has 4 divisors (see below), whose sum is σ = 2516199792. Its totient is φ = 2494127412.

The previous prime is 2505163589. The next prime is 2505163603. The reversal of 2505163601 is 1063615052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2505163601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505163603) 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, 5517755 + ... + 5518208.

It is an arithmetic number, because the mean of its divisors is an integer number (629049948).

Almost surely, 2^2505163601 is an apocalyptic number.

It is an amenable number.

2505163601 is a deficient number, since it is larger than the sum of its proper divisors (11036191).

2505163601 is a wasteful number, since it uses less digits than its factorization.

2505163601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036190.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 2505163601 is about 50051.6093747244. The cubic root of 2505163601 is about 1358.1425770123.

Adding to 2505163601 its reverse (1063615052), we get a palindrome (3568778653).

The spelling of 2505163601 in words is "two billion, five hundred five million, one hundred sixty-three thousand, six hundred one".