25899266971 has 2 divisors, whose sum is σ = 25899266972. Its totient is φ = 25899266970.

The previous prime is 25899266933. The next prime is 25899267059. The reversal of 25899266971 is 17966299852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25899266971 - 2²⁷ = 25765049243 is a prime.

It is not a weakly prime, because it can be changed into another prime (25899266171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12949633485 + 12949633486.

It is an arithmetic number, because the mean of its divisors is an integer number (12949633486).

Almost surely, 2^25899266971 is an apocalyptic number.

25899266971 is a deficient number, since it is larger than the sum of its proper divisors (1).

25899266971 is an equidigital number, since it uses as much as digits as its factorization.

25899266971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 64.

The spelling of 25899266971 in words is "twenty-five billion, eight hundred ninety-nine million, two hundred sixty-six thousand, nine hundred seventy-one".