1255511441 has 2 divisors, whose sum is σ = 1255511442. Its totient is φ = 1255511440.

The previous prime is 1255511363. The next prime is 1255511443. The reversal of 1255511441 is 1441155521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050019216 + 205492225 = 32404^2 + 14335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255511441 is a prime.

Together with 1255511443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1255511443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627755720 + 627755721.

It is an arithmetic number, because the mean of its divisors is an integer number (627755721).

Almost surely, 2^1255511441 is an apocalyptic number.

It is an amenable number.

1255511441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255511441 is an equidigital number, since it uses as much as digits as its factorization.

1255511441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 29.

The square root of 1255511441 is about 35433.1968780690. The cubic root of 1255511441 is about 1078.7982291253.

Adding to 1255511441 its reverse (1441155521), we get a palindrome (2696666962).

The spelling of 1255511441 in words is "one billion, two hundred fifty-five million, five hundred eleven thousand, four hundred forty-one".