25517159 has 2 divisors, whose sum is σ = 25517160. Its totient is φ = 25517158.

The previous prime is 25517147. The next prime is 25517179. The reversal of 25517159 is 95171552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25517159 - 2¹⁶ = 25451623 is a prime.

It is a super-2 number, since 2×25517159² = 1302250806862562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25517179) 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, 12758579 + 12758580.

It is an arithmetic number, because the mean of its divisors is an integer number (12758580).

Almost surely, 2^25517159 is an apocalyptic number.

25517159 is a deficient number, since it is larger than the sum of its proper divisors (1).

25517159 is an equidigital number, since it uses as much as digits as its factorization.

25517159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 35.

The square root of 25517159 is about 5051.4511776320. The cubic root of 25517159 is about 294.4042713067.

The spelling of 25517159 in words is "twenty-five million, five hundred seventeen thousand, one hundred fifty-nine".