25789189 has 2 divisors, whose sum is σ = 25789190. Its totient is φ = 25789188.

The previous prime is 25789157. The next prime is 25789193. The reversal of 25789189 is 98198752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22638564 + 3150625 = 4758^2 + 1775^2 .

It is a cyclic number.

It is not a de Polignac number, because 25789189 - 2⁵ = 25789157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25789109) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12894594 + 12894595.

It is an arithmetic number, because the mean of its divisors is an integer number (12894595).

Almost surely, 2^25789189 is an apocalyptic number.

It is an amenable number.

25789189 is a deficient number, since it is larger than the sum of its proper divisors (1).

25789189 is an equidigital number, since it uses as much as digits as its factorization.

25789189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 49.

The square root of 25789189 is about 5078.3057213996. The cubic root of 25789189 is about 295.4467577191.

The spelling of 25789189 in words is "twenty-five million, seven hundred eighty-nine thousand, one hundred eighty-nine".