1255681455567 has 32 divisors (see below), whose sum is σ = 2087495055360. Its totient is φ = 652261905120.

The previous prime is 1255681455529. The next prime is 1255681455583. The reversal of 1255681455567 is 7655541865521.

It is not a de Polignac number, because 1255681455567 - 2⁷ = 1255681455439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255681455567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255681455367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3796684 + ... + 4114142.

It is an arithmetic number, because the mean of its divisors is an integer number (65234220480).

Almost surely, 2^{1255681455567} is an apocalyptic number.

1255681455567 is a deficient number, since it is larger than the sum of its proper divisors (831813599793).

1255681455567 is a wasteful number, since it uses less digits than its factorization.

1255681455567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334603.

The product of its digits is 50400000, while the sum is 60.

The spelling of 1255681455567 in words is "one trillion, two hundred fifty-five billion, six hundred eighty-one million, four hundred fifty-five thousand, five hundred sixty-seven".