1255167871 has 4 divisors (see below), whose sum is σ = 1255883200. Its totient is φ = 1254452544.

The previous prime is 1255167827. The next prime is 1255167877. The reversal of 1255167871 is 1787615521.

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 1255167871 - 2¹³ = 1255159679 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 (1255167877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355026 + ... + 358543.

It is an arithmetic number, because the mean of its divisors is an integer number (313970800).

Almost surely, 2^1255167871 is an apocalyptic number.

1255167871 is a deficient number, since it is larger than the sum of its proper divisors (715329).

1255167871 is an equidigital number, since it uses as much as digits as its factorization.

1255167871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715328.

The product of its digits is 117600, while the sum is 43.

The square root of 1255167871 is about 35428.3484091483. The cubic root of 1255167871 is about 1078.6998159715.

The spelling of 1255167871 in words is "one billion, two hundred fifty-five million, one hundred sixty-seven thousand, eight hundred seventy-one".