25735718149 has 2 divisors, whose sum is σ = 25735718150. Its totient is φ = 25735718148.

The previous prime is 25735718093. The next prime is 25735718161. The reversal of 25735718149 is 94181753752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24529197924 + 1206520225 = 156618^2 + 34735^2 .

It is a cyclic number.

It is not a de Polignac number, because 25735718149 - 2²³ = 25727329541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25735718096 and 25735718105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25735718189) 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, 12867859074 + 12867859075.

It is an arithmetic number, because the mean of its divisors is an integer number (12867859075).

Almost surely, 2^25735718149 is an apocalyptic number.

It is an amenable number.

25735718149 is a deficient number, since it is larger than the sum of its proper divisors (1).

25735718149 is an equidigital number, since it uses as much as digits as its factorization.

25735718149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 52.

The spelling of 25735718149 in words is "twenty-five billion, seven hundred thirty-five million, seven hundred eighteen thousand, one hundred forty-nine".