2605507653 has 16 divisors (see below), whose sum is σ = 3973971456. Its totient is φ = 1487483760.

The previous prime is 2605507649. The next prime is 2605507657. The reversal of 2605507653 is 3567055062.

It is an interprime number because it is at equal distance from previous prime (2605507649) and next prime (2605507657).

It is not a de Polignac number, because 2605507653 - 2² = 2605507649 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605507657) 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, 33951 + ... + 79772.

It is an arithmetic number, because the mean of its divisors is an integer number (248373216).

Almost surely, 2^2605507653 is an apocalyptic number.

It is an amenable number.

2605507653 is a deficient number, since it is larger than the sum of its proper divisors (1368463803).

2605507653 is a wasteful number, since it uses less digits than its factorization.

2605507653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114824.

The product of its (nonzero) digits is 189000, while the sum is 39.

The square root of 2605507653 is about 51044.1735460571. The cubic root of 2605507653 is about 1376.0391312799.

The spelling of 2605507653 in words is "two billion, six hundred five million, five hundred seven thousand, six hundred fifty-three".