25503223 has 4 divisors (see below), whose sum is σ = 25615800. Its totient is φ = 25390648.

The previous prime is 25503221. The next prime is 25503227. The reversal of 25503223 is 32230552.

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 25503223 - 2¹ = 25503221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25503194 and 25503203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25503221) 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, 55948 + ... + 56401.

It is an arithmetic number, because the mean of its divisors is an integer number (6403950).

Almost surely, 2^25503223 is an apocalyptic number.

25503223 is a deficient number, since it is larger than the sum of its proper divisors (112577).

25503223 is a wasteful number, since it uses less digits than its factorization.

25503223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112576.

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

The square root of 25503223 is about 5050.0715836511. The cubic root of 25503223 is about 294.3506660045.

Adding to 25503223 its reverse (32230552), we get a palindrome (57733775).

The spelling of 25503223 in words is "twenty-five million, five hundred three thousand, two hundred twenty-three".