25810671659 has 2 divisors, whose sum is σ = 25810671660. Its totient is φ = 25810671658.

The previous prime is 25810671589. The next prime is 25810671709. The reversal of 25810671659 is 95617601852.

It is an a-pointer prime, because the next prime (25810671709) can be obtained adding 25810671659 to its sum of digits (50).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25810671659 - 2¹² = 25810667563 is a prime.

It is not a weakly prime, because it can be changed into another prime (25810670659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12905335829 + 12905335830.

It is an arithmetic number, because the mean of its divisors is an integer number (12905335830).

Almost surely, 2^25810671659 is an apocalyptic number.

25810671659 is a deficient number, since it is larger than the sum of its proper divisors (1).

25810671659 is an equidigital number, since it uses as much as digits as its factorization.

25810671659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 25810671659 in words is "twenty-five billion, eight hundred ten million, six hundred seventy-one thousand, six hundred fifty-nine".