25488269 has 2 divisors, whose sum is σ = 25488270. Its totient is φ = 25488268.

The previous prime is 25488223. The next prime is 25488271. The reversal of 25488269 is 96288452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 438244 = 5005^2 + 662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25488269 is a prime.

It is a super-3 number, since 3×25488269³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 25488271, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25488289) 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, 12744134 + 12744135.

It is an arithmetic number, because the mean of its divisors is an integer number (12744135).

Almost surely, 2^25488269 is an apocalyptic number.

It is an amenable number.

25488269 is a deficient number, since it is larger than the sum of its proper divisors (1).

25488269 is an equidigital number, since it uses as much as digits as its factorization.

25488269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 44.

The square root of 25488269 is about 5048.5907934789. The cubic root of 25488269 is about 294.2931232060.

The spelling of 25488269 in words is "twenty-five million, four hundred eighty-eight thousand, two hundred sixty-nine".