2549558265 has 16 divisors (see below), whose sum is σ = 4210884096. Its totient is φ = 1315900800.

The previous prime is 2549558261. The next prime is 2549558267. The reversal of 2549558265 is 5628559452.

It is not a de Polignac number, because 2549558265 - 2² = 2549558261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2549558261) 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, 2740996 + ... + 2741925.

It is an arithmetic number, because the mean of its divisors is an integer number (263180256).

Almost surely, 2^2549558265 is an apocalyptic number.

It is an amenable number.

2549558265 is a deficient number, since it is larger than the sum of its proper divisors (1661325831).

2549558265 is a wasteful number, since it uses less digits than its factorization.

2549558265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5482960.

The product of its digits is 4320000, while the sum is 51.

The square root of 2549558265 is about 50493.1506741261. The cubic root of 2549558265 is about 1366.1183149786.

The spelling of 2549558265 in words is "two billion, five hundred forty-nine million, five hundred fifty-eight thousand, two hundred sixty-five".