1255774555 has 16 divisors (see below), whose sum is σ = 1727100864. Its totient is φ = 858654720.

The previous prime is 1255774523. The next prime is 1255774573. The reversal of 1255774555 is 5554775521.

It is not a de Polignac number, because 1255774555 - 2⁵ = 1255774523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 38466 + ... + 63175.

It is an arithmetic number, because the mean of its divisors is an integer number (107943804).

Almost surely, 2^1255774555 is an apocalyptic number.

1255774555 is a deficient number, since it is larger than the sum of its proper divisors (471326309).

1255774555 is a wasteful number, since it uses less digits than its factorization.

1255774555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102006.

The product of its digits is 1225000, while the sum is 46.

The square root of 1255774555 is about 35436.9095012531. The cubic root of 1255774555 is about 1078.8735840980.

The spelling of 1255774555 in words is "one billion, two hundred fifty-five million, seven hundred seventy-four thousand, five hundred fifty-five".