25926941869 has 2 divisors, whose sum is σ = 25926941870. Its totient is φ = 25926941868.

The previous prime is 25926941801. The next prime is 25926941879. The reversal of 25926941869 is 96814962952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23187675625 + 2739266244 = 152275^2 + 52338^2 .

It is a cyclic number.

It is not a de Polignac number, because 25926941869 - 2⁷ = 25926941741 is a prime.

It is a super-2 number, since 2×25926941869² (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 (25926941879) 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, 12963470934 + 12963470935.

It is an arithmetic number, because the mean of its divisors is an integer number (12963470935).

Almost surely, 2^25926941869 is an apocalyptic number.

It is an amenable number.

25926941869 is a deficient number, since it is larger than the sum of its proper divisors (1).

25926941869 is an equidigital number, since it uses as much as digits as its factorization.

25926941869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 61.

The spelling of 25926941869 in words is "twenty-five billion, nine hundred twenty-six million, nine hundred forty-one thousand, eight hundred sixty-nine".