1225023403 has 4 divisors (see below), whose sum is σ = 1232539048. Its totient is φ = 1217507760.

The previous prime is 1225023391. The next prime is 1225023407. The reversal of 1225023403 is 3043205221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225023403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225023407) 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, 3757578 + ... + 3757903.

It is an arithmetic number, because the mean of its divisors is an integer number (308134762).

Almost surely, 2^1225023403 is an apocalyptic number.

1225023403 is a deficient number, since it is larger than the sum of its proper divisors (7515645).

1225023403 is an equidigital number, since it uses as much as digits as its factorization.

1225023403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7515644.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1225023403 is about 35000.3343269746. The cubic root of 1225023403 is about 1069.9942943767.

Adding to 1225023403 its reverse (3043205221), we get a palindrome (4268228624).

It can be divided in two parts, 12250 and 23403, that added together give a palindrome (35653).

The spelling of 1225023403 in words is "one billion, two hundred twenty-five million, twenty-three thousand, four hundred three".