25220441 has 4 divisors (see below), whose sum is σ = 25270500. Its totient is φ = 25170384.

The previous prime is 25220431. The next prime is 25220449. The reversal of 25220441 is 14402252.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20894041 + 4326400 = 4571^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 25220441 - 2¹⁰ = 25219417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25220449) 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, 24266 + ... + 25283.

It is an arithmetic number, because the mean of its divisors is an integer number (6317625).

Almost surely, 2^25220441 is an apocalyptic number.

It is an amenable number.

25220441 is a deficient number, since it is larger than the sum of its proper divisors (50059).

25220441 is an equidigital number, since it uses as much as digits as its factorization.

25220441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50058.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 25220441 is about 5021.9957188353. The cubic root of 25220441 is about 293.2586912640.

Adding to 25220441 its reverse (14402252), we get a palindrome (39622693).

The spelling of 25220441 in words is "twenty-five million, two hundred twenty thousand, four hundred forty-one".