1255403403 has 12 divisors (see below), whose sum is σ = 1920028968. Its totient is φ = 787704000.

The previous prime is 1255403393. The next prime is 1255403407. The reversal of 1255403403 is 3043045521.

1255403403 is a `hidden beast` number, since 1 + 255 + 4 + 0 + 3 + 403 = 666.

It is not a de Polignac number, because 1255403403 - 2⁸ = 1255403147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255403407) 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 11 ways as a sum of consecutive naturals, for example, 4102473 + ... + 4102778.

It is an arithmetic number, because the mean of its divisors is an integer number (160002414).

Almost surely, 2^1255403403 is an apocalyptic number.

1255403403 is a deficient number, since it is larger than the sum of its proper divisors (664625565).

1255403403 is a wasteful number, since it uses less digits than its factorization.

1255403403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205274 (or 8205271 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1255403403 is about 35431.6723144703. The cubic root of 1255403403 is about 1078.7672843531.

Adding to 1255403403 its reverse (3043045521), we get a palindrome (4298448924).

The spelling of 1255403403 in words is "one billion, two hundred fifty-five million, four hundred three thousand, four hundred three".