25228849 has 2 divisors, whose sum is σ = 25228850. Its totient is φ = 25228848.

The previous prime is 25228843. The next prime is 25228871. The reversal of 25228849 is 94882252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23590449 + 1638400 = 4857^2 + 1280^2 .

It is a cyclic number.

It is not a de Polignac number, because 25228849 - 2⁹ = 25228337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25228843) 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, 12614424 + 12614425.

It is an arithmetic number, because the mean of its divisors is an integer number (12614425).

Almost surely, 2^25228849 is an apocalyptic number.

It is an amenable number.

25228849 is a deficient number, since it is larger than the sum of its proper divisors (1).

25228849 is an equidigital number, since it uses as much as digits as its factorization.

25228849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 40.

The square root of 25228849 is about 5022.8327664775. The cubic root of 25228849 is about 293.2912765404.

The spelling of 25228849 in words is "twenty-five million, two hundred twenty-eight thousand, eight hundred forty-nine".