1255456723 has 4 divisors (see below), whose sum is σ = 1260709920. Its totient is φ = 1250203528.

The previous prime is 1255456717. The next prime is 1255456729. The reversal of 1255456723 is 3276545521.

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 (1255456717) and next prime (1255456729).

It is a cyclic number.

It is not a de Polignac number, because 1255456723 - 2⁵ = 1255456691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255456729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2626240 + ... + 2626717.

It is an arithmetic number, because the mean of its divisors is an integer number (315177480).

Almost surely, 2^1255456723 is an apocalyptic number.

1255456723 is a deficient number, since it is larger than the sum of its proper divisors (5253197).

1255456723 is an equidigital number, since it uses as much as digits as its factorization.

1255456723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253196.

The product of its digits is 252000, while the sum is 40.

The square root of 1255456723 is about 35432.4247406242. The cubic root of 1255456723 is about 1078.7825567501.

The spelling of 1255456723 in words is "one billion, two hundred fifty-five million, four hundred fifty-six thousand, seven hundred twenty-three".