25006803881 has 2 divisors, whose sum is σ = 25006803882. Its totient is φ = 25006803880.

The previous prime is 25006803841. The next prime is 25006803901. The reversal of 25006803881 is 18830860052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20695699600 + 4311104281 = 143860^2 + 65659^2 .

It is a cyclic number.

It is not a de Polignac number, because 25006803881 - 2¹⁴ = 25006787497 is a prime.

It is a super-2 number, since 2×25006803881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25006803841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12503401940 + 12503401941.

It is an arithmetic number, because the mean of its divisors is an integer number (12503401941).

Almost surely, 2^25006803881 is an apocalyptic number.

It is an amenable number.

25006803881 is a deficient number, since it is larger than the sum of its proper divisors (1).

25006803881 is an equidigital number, since it uses as much as digits as its factorization.

25006803881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 25006803881 in words is "twenty-five billion, six million, eight hundred three thousand, eight hundred eighty-one".