26251189 has 2 divisors, whose sum is σ = 26251190. Its totient is φ = 26251188.

The previous prime is 26251187. The next prime is 26251201. The reversal of 26251189 is 98115262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17783089 + 8468100 = 4217^2 + 2910^2 .

It is a cyclic number.

It is not a de Polignac number, because 26251189 - 2¹ = 26251187 is a prime.

Together with 26251187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26251187) 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, 13125594 + 13125595.

It is an arithmetic number, because the mean of its divisors is an integer number (13125595).

Almost surely, 2^26251189 is an apocalyptic number.

It is an amenable number.

26251189 is a deficient number, since it is larger than the sum of its proper divisors (1).

26251189 is an equidigital number, since it uses as much as digits as its factorization.

26251189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 26251189 is about 5123.5914161845. The cubic root of 26251189 is about 297.2005847597.

The spelling of 26251189 in words is "twenty-six million, two hundred fifty-one thousand, one hundred eighty-nine".