1255523303 has 4 divisors (see below), whose sum is σ = 1298817240. Its totient is φ = 1212229368.

The previous prime is 1255523299. The next prime is 1255523327. The reversal of 1255523303 is 3033255521.

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 1255523303 - 2² = 1255523299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 43293907 = 1255523303 / (1 + 2 + 5 + 5 + 5 + 2 + 3 + 3 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255523383) 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, 21646925 + ... + 21646982.

It is an arithmetic number, because the mean of its divisors is an integer number (324704310).

Almost surely, 2^1255523303 is an apocalyptic number.

1255523303 is a deficient number, since it is larger than the sum of its proper divisors (43293937).

1255523303 is an equidigital number, since it uses as much as digits as its factorization.

1255523303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43293936.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 1255523303 is about 35433.3642630784. The cubic root of 1255523303 is about 1078.8016265892.

Adding to 1255523303 its reverse (3033255521), we get a palindrome (4288778824).

The spelling of 1255523303 in words is "one billion, two hundred fifty-five million, five hundred twenty-three thousand, three hundred three".