25245247 has 2 divisors, whose sum is σ = 25245248. Its totient is φ = 25245246.

The previous prime is 25245229. The next prime is 25245271. The reversal of 25245247 is 74254252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25245247 - 2¹¹ = 25243199 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25245287) 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 as a sum of consecutive naturals, namely, 12622623 + 12622624.

It is an arithmetic number, because the mean of its divisors is an integer number (12622624).

Almost surely, 2^25245247 is an apocalyptic number.

25245247 is a deficient number, since it is larger than the sum of its proper divisors (1).

25245247 is an equidigital number, since it uses as much as digits as its factorization.

25245247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 31.

The square root of 25245247 is about 5024.4648471255. The cubic root of 25245247 is about 293.3548063080.

Adding to 25245247 its reverse (74254252), we get a palindrome (99499499).

The spelling of 25245247 in words is "twenty-five million, two hundred forty-five thousand, two hundred forty-seven".