25730449 has 2 divisors, whose sum is σ = 25730450. Its totient is φ = 25730448.

The previous prime is 25730437. The next prime is 25730461. The reversal of 25730449 is 94403752.

It is a balanced prime because it is at equal distance from previous prime (25730437) and next prime (25730461).

It can be written as a sum of positive squares in only one way, i.e., 21790224 + 3940225 = 4668^2 + 1985^2 .

It is a cyclic number.

It is not a de Polignac number, because 25730449 - 2⁷ = 25730321 is a prime.

It is equal to p_1608676 and since 25730449 and 1608676 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25730149) 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, 12865224 + 12865225.

It is an arithmetic number, because the mean of its divisors is an integer number (12865225).

Almost surely, 2^25730449 is an apocalyptic number.

It is an amenable number.

25730449 is a deficient number, since it is larger than the sum of its proper divisors (1).

25730449 is an equidigital number, since it uses as much as digits as its factorization.

25730449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 25730449 is about 5072.5189994716. The cubic root of 25730449 is about 295.2222743075. Note that the first 4 decimals are identical.

The spelling of 25730449 in words is "twenty-five million, seven hundred thirty thousand, four hundred forty-nine".