25524245 has 4 divisors (see below), whose sum is σ = 30629100. Its totient is φ = 20419392.

The previous prime is 25524209. The next prime is 25524283. The reversal of 25524245 is 54242552.

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 5373124 + 20151121 = 2318^2 + 4489^2 .

It is a cyclic number.

It is not a de Polignac number, because 25524245 - 2¹⁰ = 25523221 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 3 ways as a sum of consecutive naturals, for example, 2552420 + ... + 2552429.

It is an arithmetic number, because the mean of its divisors is an integer number (7657275).

Almost surely, 2^25524245 is an apocalyptic number.

It is an amenable number.

25524245 is a deficient number, since it is larger than the sum of its proper divisors (5104855).

25524245 is an equidigital number, since it uses as much as digits as its factorization.

25524245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104854.

The product of its digits is 16000, while the sum is 29.

The square root of 25524245 is about 5052.1525115539. The cubic root of 25524245 is about 294.4315203641.

Adding to 25524245 its reverse (54242552), we get a palindrome (79766797).

The spelling of 25524245 in words is "twenty-five million, five hundred twenty-four thousand, two hundred forty-five".