25223223 has 16 divisors (see below), whose sum is σ = 36015840. Its totient is φ = 15645696.

The previous prime is 25223221. The next prime is 25223251. The reversal of 25223223 is 32232252.

It is not a de Polignac number, because 25223223 - 2¹ = 25223221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25223223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25223221) 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, 1761 + ... + 7317.

It is an arithmetic number, because the mean of its divisors is an integer number (2250990).

Almost surely, 2^25223223 is an apocalyptic number.

25223223 is a deficient number, since it is larger than the sum of its proper divisors (10792617).

25223223 is a wasteful number, since it uses less digits than its factorization.

25223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5666.

The product of its digits is 1440, while the sum is 21.

The square root of 25223223 is about 5022.2726927159. The cubic root of 25223223 is about 293.2694737306.

Adding to 25223223 its reverse (32232252), we get a palindrome (57455475).

It can be divided in two parts, 2 and 5223223, that added together give a palindrome (5223225).

The spelling of 25223223 in words is "twenty-five million, two hundred twenty-three thousand, two hundred twenty-three".