1255123411 has 4 divisors (see below), whose sum is σ = 1256782192. Its totient is φ = 1253464632.

The previous prime is 1255123399. The next prime is 1255123423. The reversal of 1255123411 is 1143215521.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1255123399) and next prime (1255123423).

It is a cyclic number.

It is not a de Polignac number, because 1255123411 - 2⁹ = 1255122899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255103411) 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, 828255 + ... + 829768.

It is an arithmetic number, because the mean of its divisors is an integer number (314195548).

Almost surely, 2^1255123411 is an apocalyptic number.

1255123411 is a deficient number, since it is larger than the sum of its proper divisors (1658781).

1255123411 is an equidigital number, since it uses as much as digits as its factorization.

1255123411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658780.

The product of its digits is 1200, while the sum is 25.

The square root of 1255123411 is about 35427.7209399645. The cubic root of 1255123411 is about 1078.6870794122.

Adding to 1255123411 its reverse (1143215521), we get a palindrome (2398338932).

The spelling of 1255123411 in words is "one billion, two hundred fifty-five million, one hundred twenty-three thousand, four hundred eleven".