505225243403 has 4 divisors (see below), whose sum is σ = 505226725320. Its totient is φ = 505223761488.

The previous prime is 505225243331. The next prime is 505225243409. The reversal of 505225243403 is 304342522505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 505225243403 - 2¹⁶ = 505225177867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505225243409) 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, 56576 + ... + 1006802.

It is an arithmetic number, because the mean of its divisors is an integer number (126306681330).

Almost surely, 2^505225243403 is an apocalyptic number.

505225243403 is a deficient number, since it is larger than the sum of its proper divisors (1481917).

505225243403 is an equidigital number, since it uses as much as digits as its factorization.

505225243403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481916.

The product of its (nonzero) digits is 144000, while the sum is 35.

Adding to 505225243403 its reverse (304342522505), we get a palindrome (809567765908).

It can be divided in two parts, 50522 and 5243403, that added together give a palindrome (5293925).

The spelling of 505225243403 in words is "five hundred five billion, two hundred twenty-five million, two hundred forty-three thousand, four hundred three".