1256554255 has 8 divisors (see below), whose sum is σ = 1644943824. Its totient is φ = 913857600.

The previous prime is 1256554241. The next prime is 1256554267. The reversal of 1256554255 is 5524556521.

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

It is not a de Polignac number, because 1256554255 - 2⁹ = 1256553743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11423166 + ... + 11423275.

It is an arithmetic number, because the mean of its divisors is an integer number (205617978).

Almost surely, 2^1256554255 is an apocalyptic number.

1256554255 is a deficient number, since it is larger than the sum of its proper divisors (388389569).

1256554255 is a wasteful number, since it uses less digits than its factorization.

1256554255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22846457.

The product of its digits is 300000, while the sum is 40.

The square root of 1256554255 is about 35447.9090356540. The cubic root of 1256554255 is about 1079.0968257865.

The spelling of 1256554255 in words is "one billion, two hundred fifty-six million, five hundred fifty-four thousand, two hundred fifty-five".