25830689 has 2 divisors, whose sum is σ = 25830690. Its totient is φ = 25830688.

The previous prime is 25830653. The next prime is 25830703. The reversal of 25830689 is 98603852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19070689 + 6760000 = 4367^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 25830689 - 2¹⁶ = 25765153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25830289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12915344 + 12915345.

It is an arithmetic number, because the mean of its divisors is an integer number (12915345).

Almost surely, 2^25830689 is an apocalyptic number.

It is an amenable number.

25830689 is a deficient number, since it is larger than the sum of its proper divisors (1).

25830689 is an equidigital number, since it uses as much as digits as its factorization.

25830689 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 25830689 is about 5082.3900873506. The cubic root of 25830689 is about 295.6051505698.

The spelling of 25830689 in words is "twenty-five million, eight hundred thirty thousand, six hundred eighty-nine".