25750501181 has 2 divisors, whose sum is σ = 25750501182. Its totient is φ = 25750501180.

The previous prime is 25750501159. The next prime is 25750501201. The reversal of 25750501181 is 18110505752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22092065956 + 3658435225 = 148634^2 + 60485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25750501181 is a prime.

It is a super-2 number, since 2×25750501181² (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 (25750501111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12875250590 + 12875250591.

It is an arithmetic number, because the mean of its divisors is an integer number (12875250591).

Almost surely, 2^25750501181 is an apocalyptic number.

It is an amenable number.

25750501181 is a deficient number, since it is larger than the sum of its proper divisors (1).

25750501181 is an equidigital number, since it uses as much as digits as its factorization.

25750501181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 35.

The spelling of 25750501181 in words is "twenty-five billion, seven hundred fifty million, five hundred one thousand, one hundred eighty-one".