25726625069 has 2 divisors, whose sum is σ = 25726625070. Its totient is φ = 25726625068.

The previous prime is 25726625059. The next prime is 25726625159. The reversal of 25726625069 is 96052662752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19359383044 + 6367242025 = 139138^2 + 79795^2 .

It is a cyclic number.

It is not a de Polignac number, because 25726625069 - 2⁴ = 25726625053 is a prime.

It is a super-2 number, since 2×25726625069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25726625059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12863312534 + 12863312535.

It is an arithmetic number, because the mean of its divisors is an integer number (12863312535).

Almost surely, 2^25726625069 is an apocalyptic number.

It is an amenable number.

25726625069 is a deficient number, since it is larger than the sum of its proper divisors (1).

25726625069 is an equidigital number, since it uses as much as digits as its factorization.

25726625069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 25726625069 in words is "twenty-five billion, seven hundred twenty-six million, six hundred twenty-five thousand, sixty-nine".