25525245 has 32 divisors (see below), whose sum is σ = 44651520. Its totient is φ = 12395520.

The previous prime is 25525243. The next prime is 25525319. The reversal of 25525245 is 54252552.

It is not a de Polignac number, because 25525245 - 2¹ = 25525243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6291 + ... + 9519.

It is an arithmetic number, because the mean of its divisors is an integer number (1395360).

Almost surely, 2^25525245 is an apocalyptic number.

It is an amenable number.

25525245 is a deficient number, since it is larger than the sum of its proper divisors (19126275).

25525245 is a wasteful number, since it uses less digits than its factorization.

25525245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285.

The product of its digits is 20000, while the sum is 30.

The square root of 25525245 is about 5052.2514783015. The cubic root of 25525245 is about 294.4353654361.

Adding to 25525245 its reverse (54252552), we get a palindrome (79777797).

The spelling of 25525245 in words is "twenty-five million, five hundred twenty-five thousand, two hundred forty-five".