25255249 has 2 divisors, whose sum is σ = 25255250. Its totient is φ = 25255248.

The previous prime is 25255247. The next prime is 25255271. The reversal of 25255249 is 94255252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25250625 + 4624 = 5025^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 25255249 - 2¹ = 25255247 is a prime.

Together with 25255247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25255247) by changing a digit.

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 as a sum of consecutive naturals, namely, 12627624 + 12627625.

It is an arithmetic number, because the mean of its divisors is an integer number (12627625).

Almost surely, 2^25255249 is an apocalyptic number.

It is an amenable number.

25255249 is a deficient number, since it is larger than the sum of its proper divisors (1).

25255249 is an equidigital number, since it uses as much as digits as its factorization.

25255249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 34.

The square root of 25255249 is about 5025.4600784406. The cubic root of 25255249 is about 293.3935429378.

The spelling of 25255249 in words is "twenty-five million, two hundred fifty-five thousand, two hundred forty-nine".