2556512511 has 8 divisors (see below), whose sum is σ = 3895638144. Its totient is φ = 1460864280.

The previous prime is 2556512509. The next prime is 2556512551. The reversal of 2556512511 is 1152156552.

2556512511 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2556512511 - 2¹ = 2556512509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556512551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60869325 + ... + 60869366.

It is an arithmetic number, because the mean of its divisors is an integer number (486954768).

Almost surely, 2^2556512511 is an apocalyptic number.

2556512511 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2556512511 is a deficient number, since it is larger than the sum of its proper divisors (1339125633).

2556512511 is a wasteful number, since it uses less digits than its factorization.

2556512511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121738701.

The product of its digits is 15000, while the sum is 33.

The square root of 2556512511 is about 50561.9670404544. The cubic root of 2556512511 is about 1367.3592748005.

The spelling of 2556512511 in words is "two billion, five hundred fifty-six million, five hundred twelve thousand, five hundred eleven".