2505646653 has 16 divisors (see below), whose sum is σ = 3424549632. Its totient is φ = 1628640000.

The previous prime is 2505646631. The next prime is 2505646721. The reversal of 2505646653 is 3566465052.

It is not a de Polignac number, because 2505646653 - 2⁵ = 2505646621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505646753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215868 + ... + 227178.

It is an arithmetic number, because the mean of its divisors is an integer number (214034352).

Almost surely, 2^2505646653 is an apocalyptic number.

It is an amenable number.

2505646653 is a deficient number, since it is larger than the sum of its proper divisors (918902979).

2505646653 is a wasteful number, since it uses less digits than its factorization.

2505646653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13156.

The product of its (nonzero) digits is 648000, while the sum is 42.

The square root of 2505646653 is about 50056.4346812675. The cubic root of 2505646653 is about 1358.2298649011.

The spelling of 2505646653 in words is "two billion, five hundred five million, six hundred forty-six thousand, six hundred fifty-three".