1255451403 has 16 divisors (see below), whose sum is σ = 1723723776. Its totient is φ = 812193120.

The previous prime is 1255451369. The next prime is 1255451453. The reversal of 1255451403 is 3041545521.

It is not a de Polignac number, because 1255451403 - 2⁶ = 1255451339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255451453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27748 + ... + 57278.

It is an arithmetic number, because the mean of its divisors is an integer number (107732736).

Almost surely, 2^1255451403 is an apocalyptic number.

1255451403 is a deficient number, since it is larger than the sum of its proper divisors (468272373).

1255451403 is a wasteful number, since it uses less digits than its factorization.

1255451403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29954.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1255451403 is about 35432.3496680646. The cubic root of 1255451403 is about 1078.7810329670.

Adding to 1255451403 its reverse (3041545521), we get a palindrome (4296996924).

The spelling of 1255451403 in words is "one billion, two hundred fifty-five million, four hundred fifty-one thousand, four hundred three".