25241140181 has 2 divisors, whose sum is σ = 25241140182. Its totient is φ = 25241140180.

The previous prime is 25241140091. The next prime is 25241140187. The reversal of 25241140181 is 18104114252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19055317681 + 6185822500 = 138041^2 + 78650^2 .

It is a cyclic number.

It is not a de Polignac number, because 25241140181 - 2¹⁸ = 25240878037 is a prime.

It is a super-2 number, since 2×25241140181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25241140187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12620570090 + 12620570091.

It is an arithmetic number, because the mean of its divisors is an integer number (12620570091).

Almost surely, 2^25241140181 is an apocalyptic number.

It is an amenable number.

25241140181 is a deficient number, since it is larger than the sum of its proper divisors (1).

25241140181 is an equidigital number, since it uses as much as digits as its factorization.

25241140181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 29.

The spelling of 25241140181 in words is "twenty-five billion, two hundred forty-one million, one hundred forty thousand, one hundred eighty-one".