2557252811 has 4 divisors (see below), whose sum is σ = 2559334800. Its totient is φ = 2555170824.

The previous prime is 2557252801. The next prime is 2557252843. The reversal of 2557252811 is 1182527552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2557252811 - 2¹⁰ = 2557251787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2557252801) 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, 1039151 + ... + 1041608.

It is an arithmetic number, because the mean of its divisors is an integer number (639833700).

Almost surely, 2^2557252811 is an apocalyptic number.

2557252811 is a deficient number, since it is larger than the sum of its proper divisors (2081989).

2557252811 is a wasteful number, since it uses less digits than its factorization.

2557252811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081988.

The product of its digits is 56000, while the sum is 38.

The square root of 2557252811 is about 50569.2872304920. The cubic root of 2557252811 is about 1367.4912460406.

The spelling of 2557252811 in words is "two billion, five hundred fifty-seven million, two hundred fifty-two thousand, eight hundred eleven".