1255947167 has 4 divisors (see below), whose sum is σ = 1299255720. Its totient is φ = 1212638616.

The previous prime is 1255947157. The next prime is 1255947169. The reversal of 1255947167 is 7617495521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255947167 - 2⁶ = 1255947103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255947169) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21654233 + ... + 21654290.

It is an arithmetic number, because the mean of its divisors is an integer number (324813930).

Almost surely, 2^1255947167 is an apocalyptic number.

1255947167 is a deficient number, since it is larger than the sum of its proper divisors (43308553).

1255947167 is an equidigital number, since it uses as much as digits as its factorization.

1255947167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43308552.

The product of its digits is 529200, while the sum is 47.

The square root of 1255947167 is about 35439.3449008302. The cubic root of 1255947167 is about 1078.9230138821.

The spelling of 1255947167 in words is "one billion, two hundred fifty-five million, nine hundred forty-seven thousand, one hundred sixty-seven".