1255555923 has 4 divisors (see below), whose sum is σ = 1674074568. Its totient is φ = 837037280.

The previous prime is 1255555883. The next prime is 1255555991. The reversal of 1255555923 is 3295555521.

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 1255555923 - 2²⁵ = 1222001491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255555123) 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, 209259318 + ... + 209259323.

It is an arithmetic number, because the mean of its divisors is an integer number (418518642).

Almost surely, 2^1255555923 is an apocalyptic number.

1255555923 is a deficient number, since it is larger than the sum of its proper divisors (418518645).

1255555923 is an equidigital number, since it uses as much as digits as its factorization.

1255555923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418518644.

The product of its digits is 337500, while the sum is 42.

The square root of 1255555923 is about 35433.8245607216. The cubic root of 1255555923 is about 1078.8109693613.

The spelling of 1255555923 in words is "one billion, two hundred fifty-five million, five hundred fifty-five thousand, nine hundred twenty-three".