25244413 has 4 divisors (see below), whose sum is σ = 26114940. Its totient is φ = 24373888.

The previous prime is 25244411. The next prime is 25244419. The reversal of 25244413 is 31444252.

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 11539609 + 13704804 = 3397^2 + 3702^2 .

It is a cyclic number.

It is not a de Polignac number, because 25244413 - 2¹ = 25244411 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 (25244411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435220 + ... + 435277.

It is an arithmetic number, because the mean of its divisors is an integer number (6528735).

Almost surely, 2^25244413 is an apocalyptic number.

It is an amenable number.

25244413 is a deficient number, since it is larger than the sum of its proper divisors (870527).

25244413 is an equidigital number, since it uses as much as digits as its factorization.

25244413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870526.

The product of its digits is 3840, while the sum is 25.

The square root of 25244413 is about 5024.3818525267. The cubic root of 25244413 is about 293.3515758570.

Adding to 25244413 its reverse (31444252), we get a palindrome (56688665).

The spelling of 25244413 in words is "twenty-five million, two hundred forty-four thousand, four hundred thirteen".