2511255511 has 2 divisors, whose sum is σ = 2511255512. Its totient is φ = 2511255510.

The previous prime is 2511255499. The next prime is 2511255541. The reversal of 2511255511 is 1155521152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2511255511 - 2¹⁷ = 2511124439 is a prime.

It is a super-2 number, since 2×2511255511² = 12612808483055742242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2511255511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2511255541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255627755 + 1255627756.

It is an arithmetic number, because the mean of its divisors is an integer number (1255627756).

Almost surely, 2^2511255511 is an apocalyptic number.

2511255511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2511255511 is an equidigital number, since it uses as much as digits as its factorization.

2511255511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2500, while the sum is 28.

The square root of 2511255511 is about 50112.4287078565. The cubic root of 2511255511 is about 1359.2425696972.

Adding to 2511255511 its reverse (1155521152), we get a palindrome (3666776663).

The spelling of 2511255511 in words is "two billion, five hundred eleven million, two hundred fifty-five thousand, five hundred eleven".