1255423443 has 4 divisors (see below), whose sum is σ = 1673897928. Its totient is φ = 836948960.

The previous prime is 1255423441. The next prime is 1255423447. The reversal of 1255423443 is 3443245521.

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 1255423443 - 2¹ = 1255423441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255423441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209237238 + ... + 209237243.

It is an arithmetic number, because the mean of its divisors is an integer number (418474482).

Almost surely, 2^1255423443 is an apocalyptic number.

1255423443 is a deficient number, since it is larger than the sum of its proper divisors (418474485).

1255423443 is an equidigital number, since it uses as much as digits as its factorization.

1255423443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418474484.

The product of its digits is 57600, while the sum is 33.

The square root of 1255423443 is about 35431.9551111705. The cubic root of 1255423443 is about 1078.7730244420.

Adding to 1255423443 its reverse (3443245521), we get a palindrome (4698668964).

The spelling of 1255423443 in words is "one billion, two hundred fifty-five million, four hundred twenty-three thousand, four hundred forty-three".