6255661493 has 2 divisors, whose sum is σ = 6255661494. Its totient is φ = 6255661492.

The previous prime is 6255661483. The next prime is 6255661549. The reversal of 6255661493 is 3941665526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4943917969 + 1311743524 = 70313^2 + 36218^2 .

It is a cyclic number.

It is not a de Polignac number, because 6255661493 - 2²⁴ = 6238884277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6255661483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3127830746 + 3127830747.

It is an arithmetic number, because the mean of its divisors is an integer number (3127830747).

Almost surely, 2^6255661493 is an apocalyptic number.

It is an amenable number.

6255661493 is a deficient number, since it is larger than the sum of its proper divisors (1).

6255661493 is an equidigital number, since it uses as much as digits as its factorization.

6255661493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 47.

The square root of 6255661493 is about 79092.7398248411. The cubic root of 6255661493 is about 1842.5717712930.

The spelling of 6255661493 in words is "six billion, two hundred fifty-five million, six hundred sixty-one thousand, four hundred ninety-three".