25255202681 has 2 divisors, whose sum is σ = 25255202682. Its totient is φ = 25255202680.

The previous prime is 25255202603. The next prime is 25255202699. The reversal of 25255202681 is 18620255252.

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., 14690652025 + 10564550656 = 121205^2 + 102784^2 .

It is a cyclic number.

It is not a de Polignac number, because 25255202681 - 2²⁶ = 25188093817 is a prime.

It is a super-2 number, since 2×25255202681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25255202081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12627601340 + 12627601341.

It is an arithmetic number, because the mean of its divisors is an integer number (12627601341).

Almost surely, 2^25255202681 is an apocalyptic number.

It is an amenable number.

25255202681 is a deficient number, since it is larger than the sum of its proper divisors (1).

25255202681 is an equidigital number, since it uses as much as digits as its factorization.

25255202681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 25255202681 in words is "twenty-five billion, two hundred fifty-five million, two hundred two thousand, six hundred eighty-one".