25489049 has 2 divisors, whose sum is σ = 25489050. Its totient is φ = 25489048.

The previous prime is 25489039. The next prime is 25489081. The reversal of 25489049 is 94098452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24552025 + 937024 = 4955^2 + 968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25489049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25488997 and 25489015.

It is not a weakly prime, because it can be changed into another prime (25489039) 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, 12744524 + 12744525.

It is an arithmetic number, because the mean of its divisors is an integer number (12744525).

Almost surely, 2^25489049 is an apocalyptic number.

It is an amenable number.

25489049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25489049 is an equidigital number, since it uses as much as digits as its factorization.

25489049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 25489049 is about 5048.6680421672. The cubic root of 25489049 is about 294.2961251922.

The spelling of 25489049 in words is "twenty-five million, four hundred eighty-nine thousand, forty-nine".