25510855161101 has 2 divisors, whose sum is σ = 25510855161102. Its totient is φ = 25510855161100.

The previous prime is 25510855161097. The next prime is 25510855161173. The reversal of 25510855161101 is 10116155801552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25225496205001 + 285358956100 = 5022499^2 + 534190^2 .

It is a cyclic number.

It is not a de Polignac number, because 25510855161101 - 2² = 25510855161097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25510855160101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12755427580550 + 12755427580551.

It is an arithmetic number, because the mean of its divisors is an integer number (12755427580551).

Almost surely, 2^{25510855161101} is an apocalyptic number.

It is an amenable number.

25510855161101 is a deficient number, since it is larger than the sum of its proper divisors (1).

25510855161101 is an equidigital number, since it uses as much as digits as its factorization.

25510855161101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60000, while the sum is 41.

The spelling of 25510855161101 in words is "twenty-five trillion, five hundred ten billion, eight hundred fifty-five million, one hundred sixty-one thousand, one hundred one".