25625894999 has 2 divisors, whose sum is σ = 25625895000. Its totient is φ = 25625894998.

The previous prime is 25625894993. The next prime is 25625895007. The reversal of 25625894999 is 99949852652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25625894999 - 2¹² = 25625890903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25625894993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12812947499 + 12812947500.

It is an arithmetic number, because the mean of its divisors is an integer number (12812947500).

Almost surely, 2^25625894999 is an apocalyptic number.

25625894999 is a deficient number, since it is larger than the sum of its proper divisors (1).

25625894999 is an equidigital number, since it uses as much as digits as its factorization.

25625894999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125971200, while the sum is 68.

The spelling of 25625894999 in words is "twenty-five billion, six hundred twenty-five million, eight hundred ninety-four thousand, nine hundred ninety-nine".