25759397 has 2 divisors, whose sum is σ = 25759398. Its totient is φ = 25759396.

The previous prime is 25759387. The next prime is 25759411. The reversal of 25759397 is 79395752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20349121 + 5410276 = 4511^2 + 2326^2 .

It is a cyclic number.

It is not a de Polignac number, because 25759397 - 2⁴ = 25759381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25759387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12879698 + 12879699.

It is an arithmetic number, because the mean of its divisors is an integer number (12879699).

Almost surely, 2^25759397 is an apocalyptic number.

It is an amenable number.

25759397 is a deficient number, since it is larger than the sum of its proper divisors (1).

25759397 is an equidigital number, since it uses as much as digits as its factorization.

25759397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 595350, while the sum is 47.

The square root of 25759397 is about 5075.3716120103. The cubic root of 25759397 is about 295.3329459282.

The spelling of 25759397 in words is "twenty-five million, seven hundred fifty-nine thousand, three hundred ninety-seven".