25859081 has 2 divisors, whose sum is σ = 25859082. Its totient is φ = 25859080.

The previous prime is 25859047. The next prime is 25859101. The reversal of 25859081 is 18095852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15721225 + 10137856 = 3965^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 25859081 - 2¹⁴ = 25842697 is a prime.

It is a super-2 number, since 2×25859081² = 1337384140329122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25859381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12929540 + 12929541.

It is an arithmetic number, because the mean of its divisors is an integer number (12929541).

Almost surely, 2^25859081 is an apocalyptic number.

It is an amenable number.

25859081 is a deficient number, since it is larger than the sum of its proper divisors (1).

25859081 is an equidigital number, since it uses as much as digits as its factorization.

25859081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 25859081 is about 5085.1824942670. The cubic root of 25859081 is about 295.7134164688.

The spelling of 25859081 in words is "twenty-five million, eight hundred fifty-nine thousand, eighty-one".