25211422541 has 2 divisors, whose sum is σ = 25211422542. Its totient is φ = 25211422540.

The previous prime is 25211422519. The next prime is 25211422543. The reversal of 25211422541 is 14522411252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21212757316 + 3998665225 = 145646^2 + 63235^2 .

It is a cyclic number.

It is not a de Polignac number, because 25211422541 - 2¹⁰ = 25211421517 is a prime.

Together with 25211422543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25211422543) 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, 12605711270 + 12605711271.

It is an arithmetic number, because the mean of its divisors is an integer number (12605711271).

Almost surely, 2^25211422541 is an apocalyptic number.

It is an amenable number.

25211422541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25211422541 is an equidigital number, since it uses as much as digits as its factorization.

25211422541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6400, while the sum is 29.

Adding to 25211422541 its reverse (14522411252), we get a palindrome (39733833793).

The spelling of 25211422541 in words is "twenty-five billion, two hundred eleven million, four hundred twenty-two thousand, five hundred forty-one".