1255427451667 has 4 divisors (see below), whose sum is σ = 1262684257920. Its totient is φ = 1248170645416.

The previous prime is 1255427451637. The next prime is 1255427451701. The reversal of 1255427451667 is 7661547245521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255427451667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255427451617) 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, 3628402867 + ... + 3628403212.

It is an arithmetic number, because the mean of its divisors is an integer number (315671064480).

Almost surely, 2^{1255427451667} is an apocalyptic number.

1255427451667 is a deficient number, since it is larger than the sum of its proper divisors (7256806253).

1255427451667 is an equidigital number, since it uses as much as digits as its factorization.

1255427451667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7256806252.

The product of its digits is 14112000, while the sum is 55.

The spelling of 1255427451667 in words is "one trillion, two hundred fifty-five billion, four hundred twenty-seven million, four hundred fifty-one thousand, six hundred sixty-seven".