25686097 has 2 divisors, whose sum is σ = 25686098. Its totient is φ = 25686096.

The previous prime is 25686077. The next prime is 25686107. The reversal of 25686097 is 79068652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13512976 + 12173121 = 3676^2 + 3489^2 .

It is a cyclic number.

It is not a de Polignac number, because 25686097 - 2⁷ = 25685969 is a prime.

It is not a weakly prime, because it can be changed into another prime (25686077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12843048 + 12843049.

It is an arithmetic number, because the mean of its divisors is an integer number (12843049).

Almost surely, 2^25686097 is an apocalyptic number.

It is an amenable number.

25686097 is a deficient number, since it is larger than the sum of its proper divisors (1).

25686097 is an equidigital number, since it uses as much as digits as its factorization.

25686097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 25686097 is about 5068.1453215156. The cubic root of 25686097 is about 295.0525502476.

The spelling of 25686097 in words is "twenty-five million, six hundred eighty-six thousand, ninety-seven".