1255327817 has 8 divisors (see below), whose sum is σ = 1266118656. Its totient is φ = 1244551392.

The previous prime is 1255327807. The next prime is 1255327819. The reversal of 1255327817 is 7187235521.

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

It is a cyclic number.

It is not a de Polignac number, because 1255327817 - 2¹² = 1255323721 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 7 ways as a sum of consecutive naturals, for example, 240368 + ... + 245534.

It is an arithmetic number, because the mean of its divisors is an integer number (158264832).

Almost surely, 2^1255327817 is an apocalyptic number.

It is an amenable number.

1255327817 is a deficient number, since it is larger than the sum of its proper divisors (10790839).

1255327817 is a wasteful number, since it uses less digits than its factorization.

1255327817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207.

The product of its digits is 117600, while the sum is 41.

The square root of 1255327817 is about 35430.6056538694. The cubic root of 1255327817 is about 1078.7456335859.

The spelling of 1255327817 in words is "one billion, two hundred fifty-five million, three hundred twenty-seven thousand, eight hundred seventeen".