2556255461 has 2 divisors, whose sum is σ = 2556255462. Its totient is φ = 2556255460.

The previous prime is 2556255409. The next prime is 2556255479. The reversal of 2556255461 is 1645526552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1988624836 + 567630625 = 44594^2 + 23825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2556255461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2556155461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278127730 + 1278127731.

It is an arithmetic number, because the mean of its divisors is an integer number (1278127731).

Almost surely, 2^2556255461 is an apocalyptic number.

It is an amenable number.

2556255461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556255461 is an equidigital number, since it uses as much as digits as its factorization.

2556255461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360000, while the sum is 41.

The square root of 2556255461 is about 50559.4250461771. The cubic root of 2556255461 is about 1367.3134452468.

The spelling of 2556255461 in words is "two billion, five hundred fifty-six million, two hundred fifty-five thousand, four hundred sixty-one".