25189 has 2 divisors, whose sum is σ = 25190. Its totient is φ = 25188.
The previous prime is 25183. The next prime is 25219. The reversal of 25189 is 98152.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 24964 + 225 = 158^2 + 15^2 .
It is a cyclic number.
It is not a de Polignac number, because 25189 - 29 = 24677 is a prime.
25189 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (25183) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12594 + 12595.
It is an arithmetic number, because the mean of its divisors is an integer number (12595).
225189 is an apocalyptic number.
It is an amenable number.
25189 is a deficient number, since it is larger than the sum of its proper divisors (1).
25189 is an equidigital number, since it uses as much as digits as its factorization.
25189 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 720, while the sum is 25.
The square root of 25189 is about 158.7104281388. The cubic root of 25189 is about 29.3136777183.
The spelling of 25189 in words is "twenty-five thousand, one hundred eighty-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •