25604245 has 12 divisors (see below), whose sum is σ = 31826340. Its totient is φ = 19773824.

The previous prime is 25604197. The next prime is 25604263. The reversal of 25604245 is 54240652.

It can be written as a sum of positive squares in 6 ways, for example, as 933156 + 24671089 = 966^2 + 4967^2 .

It is not a de Polignac number, because 25604245 - 2²³ = 17215637 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1161 + ... + 7249.

It is an arithmetic number, because the mean of its divisors is an integer number (2652195).

Almost surely, 2^25604245 is an apocalyptic number.

It is an amenable number.

25604245 is a deficient number, since it is larger than the sum of its proper divisors (6222095).

25604245 is an equidigital number, since it uses as much as digits as its factorization.

25604245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152 (or 6123 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 25604245 is about 5060.0637347765. The cubic root of 25604245 is about 294.7388093177.

Adding to 25604245 its reverse (54240652), we get a palindrome (79844897).

The spelling of 25604245 in words is "twenty-five million, six hundred four thousand, two hundred forty-five".