1255327811 has 4 divisors (see below), whose sum is σ = 1262844912. Its totient is φ = 1247810712.

The previous prime is 1255327807. The next prime is 1255327819. The reversal of 1255327811 is 1187235521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1187235521 = 109 ⋅10892069.

It is a cyclic number.

It is not a de Polignac number, because 1255327811 - 2² = 1255327807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255327819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3758300 + ... + 3758633.

It is an arithmetic number, because the mean of its divisors is an integer number (315711228).

Almost surely, 2^1255327811 is an apocalyptic number.

1255327811 is a deficient number, since it is larger than the sum of its proper divisors (7517101).

1255327811 is an equidigital number, since it uses as much as digits as its factorization.

1255327811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517100.

The product of its digits is 16800, while the sum is 35.

The square root of 1255327811 is about 35430.6055691968. The cubic root of 1255327811 is about 1078.7456318673.

The spelling of 1255327811 in words is "one billion, two hundred fifty-five million, three hundred twenty-seven thousand, eight hundred eleven".