1255711371 has 4 divisors (see below), whose sum is σ = 1674281832. Its totient is φ = 837140912.

The previous prime is 1255711367. The next prime is 1255711393. The reversal of 1255711371 is 1731175521.

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 1255711371 - 2² = 1255711367 is a prime.

It is a super-2 number, since 2×1255711371² = 3153622094517399282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255711771) 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, 209285226 + ... + 209285231.

It is an arithmetic number, because the mean of its divisors is an integer number (418570458).

Almost surely, 2^1255711371 is an apocalyptic number.

1255711371 is a deficient number, since it is larger than the sum of its proper divisors (418570461).

1255711371 is an equidigital number, since it uses as much as digits as its factorization.

1255711371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418570460.

The product of its digits is 7350, while the sum is 33.

The square root of 1255711371 is about 35436.0179901749. The cubic root of 1255711371 is about 1078.8554893714.

Adding to 1255711371 its reverse (1731175521), we get a palindrome (2986886892).

The spelling of 1255711371 in words is "one billion, two hundred fifty-five million, seven hundred eleven thousand, three hundred seventy-one".