25529875799 has 2 divisors, whose sum is σ = 25529875800. Its totient is φ = 25529875798.

The previous prime is 25529875739. The next prime is 25529875829. The reversal of 25529875799 is 99757892552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25529875799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25529875739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12764937899 + 12764937900.

It is an arithmetic number, because the mean of its divisors is an integer number (12764937900).

Almost surely, 2^25529875799 is an apocalyptic number.

25529875799 is a deficient number, since it is larger than the sum of its proper divisors (1).

25529875799 is an equidigital number, since it uses as much as digits as its factorization.

25529875799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884000, while the sum is 68.

The spelling of 25529875799 in words is "twenty-five billion, five hundred twenty-nine million, eight hundred seventy-five thousand, seven hundred ninety-nine".