25497714841 has 2 divisors, whose sum is σ = 25497714842. Its totient is φ = 25497714840.

The previous prime is 25497714751. The next prime is 25497714871. The reversal of 25497714841 is 14841779452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25335407241 + 162307600 = 159171^2 + 12740^2 .

It is a cyclic number.

It is not a de Polignac number, because 25497714841 - 2⁷ = 25497714713 is a prime.

It is a super-2 number, since 2×25497714841² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25497714871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12748857420 + 12748857421.

It is an arithmetic number, because the mean of its divisors is an integer number (12748857421).

Almost surely, 2^25497714841 is an apocalyptic number.

It is an amenable number.

25497714841 is a deficient number, since it is larger than the sum of its proper divisors (1).

25497714841 is an equidigital number, since it uses as much as digits as its factorization.

25497714841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 52.

The spelling of 25497714841 in words is "twenty-five billion, four hundred ninety-seven million, seven hundred fourteen thousand, eight hundred forty-one".