1255567679 has 8 divisors (see below), whose sum is σ = 1268762880. Its totient is φ = 1242432216.

The previous prime is 1255567601. The next prime is 1255567693. The reversal of 1255567679 is 9767655521.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255567679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1255567679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255567699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27962 + ... + 57384.

It is an arithmetic number, because the mean of its divisors is an integer number (158595360).

Almost surely, 2^1255567679 is an apocalyptic number.

1255567679 is a deficient number, since it is larger than the sum of its proper divisors (13195201).

1255567679 is a wasteful number, since it uses less digits than its factorization.

1255567679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29869.

The product of its digits is 3969000, while the sum is 53.

The square root of 1255567679 is about 35433.9904470270. The cubic root of 1255567679 is about 1078.8143363856.

The spelling of 1255567679 in words is "one billion, two hundred fifty-five million, five hundred sixty-seven thousand, six hundred seventy-nine".