25027116525181 has 2 divisors, whose sum is σ = 25027116525182. Its totient is φ = 25027116525180.

The previous prime is 25027116525113. The next prime is 25027116525251. The reversal of 25027116525181 is 18152561172052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21628498916025 + 3398617609156 = 4650645^2 + 1843534^2 .

It is a cyclic number.

It is not a de Polignac number, because 25027116525181 - 2¹⁷ = 25027116394109 is a prime.

It is a super-2 number, since 2×25027116525181² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25027119525181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12513558262590 + 12513558262591.

It is an arithmetic number, because the mean of its divisors is an integer number (12513558262591).

Almost surely, 2^{25027116525181} is an apocalyptic number.

It is an amenable number.

25027116525181 is a deficient number, since it is larger than the sum of its proper divisors (1).

25027116525181 is an equidigital number, since it uses as much as digits as its factorization.

25027116525181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 46.

The spelling of 25027116525181 in words is "twenty-five trillion, twenty-seven billion, one hundred sixteen million, five hundred twenty-five thousand, one hundred eighty-one".