1255559667 has 16 divisors (see below), whose sum is σ = 1776795552. Its totient is φ = 785917440.

The previous prime is 1255559663. The next prime is 1255559671. The reversal of 1255559667 is 7669555521.

It is an interprime number because it is at equal distance from previous prime (1255559663) and next prime (1255559671).

It is not a de Polignac number, because 1255559667 - 2² = 1255559663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1255559663) by changing a digit.

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, 7768 + ... + 50709.

It is an arithmetic number, because the mean of its divisors is an integer number (111049722).

Almost surely, 2^1255559667 is an apocalyptic number.

1255559667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1255559667 is a deficient number, since it is larger than the sum of its proper divisors (521235885).

1255559667 is a wasteful number, since it uses less digits than its factorization.

1255559667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58918.

The product of its digits is 2835000, while the sum is 51.

The square root of 1255559667 is about 35433.8773915585. The cubic root of 1255559667 is about 1078.8120416789.

The spelling of 1255559667 in words is "one billion, two hundred fifty-five million, five hundred fifty-nine thousand, six hundred sixty-seven".