25223503 has 4 divisors (see below), whose sum is σ = 25651080. Its totient is φ = 24795928.

The previous prime is 25223501. The next prime is 25223509. The reversal of 25223503 is 30532252.

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 25223503 - 2¹ = 25223501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25223501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213700 + ... + 213817.

It is an arithmetic number, because the mean of its divisors is an integer number (6412770).

Almost surely, 2^25223503 is an apocalyptic number.

25223503 is a deficient number, since it is larger than the sum of its proper divisors (427577).

25223503 is an equidigital number, since it uses as much as digits as its factorization.

25223503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427576.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 25223503 is about 5022.3005684646. The cubic root of 25223503 is about 293.2705589097.

Adding to 25223503 its reverse (30532252), we get a palindrome (55755755).

The spelling of 25223503 in words is "twenty-five million, two hundred twenty-three thousand, five hundred three".