25850802899 has 2 divisors, whose sum is σ = 25850802900. Its totient is φ = 25850802898.

The previous prime is 25850802799. The next prime is 25850802917. The reversal of 25850802899 is 99820805852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25850802899 is a prime.

It is not a weakly prime, because it can be changed into another prime (25850802499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12925401449 + 12925401450.

It is an arithmetic number, because the mean of its divisors is an integer number (12925401450).

Almost surely, 2^25850802899 is an apocalyptic number.

25850802899 is a deficient number, since it is larger than the sum of its proper divisors (1).

25850802899 is an equidigital number, since it uses as much as digits as its factorization.

25850802899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4147200, while the sum is 56.

The spelling of 25850802899 in words is "twenty-five billion, eight hundred fifty million, eight hundred two thousand, eight hundred ninety-nine".