2565498005 has 16 divisors (see below), whose sum is σ = 3570913920. Its totient is φ = 1732940352.

The previous prime is 2565497959. The next prime is 2565498007. The reversal of 2565498005 is 5008945652.

It is a cyclic number.

It is not a de Polignac number, because 2565498005 - 2¹⁴ = 2565481621 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 (2565498007) 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, 544670 + ... + 549359.

It is an arithmetic number, because the mean of its divisors is an integer number (223182120).

Almost surely, 2^2565498005 is an apocalyptic number.

It is an amenable number.

2565498005 is a deficient number, since it is larger than the sum of its proper divisors (1005415915).

2565498005 is a wasteful number, since it uses less digits than its factorization.

2565498005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094108.

The product of its (nonzero) digits is 432000, while the sum is 44.

The square root of 2565498005 is about 50650.7453548317. The cubic root of 2565498005 is about 1368.9593754614.

The spelling of 2565498005 in words is "two billion, five hundred sixty-five million, four hundred ninety-eight thousand, five".