25507245 has 16 divisors (see below), whose sum is σ = 41915520. Its totient is φ = 13235904.

The previous prime is 25507243. The next prime is 25507249. The reversal of 25507245 is 54270552.

It is not a de Polignac number, because 25507245 - 2¹ = 25507243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25507243) 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 15 ways as a sum of consecutive naturals, for example, 22425 + ... + 23534.

It is an arithmetic number, because the mean of its divisors is an integer number (2619720).

Almost surely, 2^25507245 is an apocalyptic number.

It is an amenable number.

25507245 is a deficient number, since it is larger than the sum of its proper divisors (16408275).

25507245 is a wasteful number, since it uses less digits than its factorization.

25507245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46004.

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 25507245 is about 5050.4697801294. The cubic root of 25507245 is about 294.3661387698.

Adding to 25507245 its reverse (54270552), we get a palindrome (79777797).

It can be divided in two parts, 25507 and 245, that added together give a palindrome (25752).

The spelling of 25507245 in words is "twenty-five million, five hundred seven thousand, two hundred forty-five".