25462402081 has 2 divisors, whose sum is σ = 25462402082. Its totient is φ = 25462402080.

The previous prime is 25462401989. The next prime is 25462402087. The reversal of 25462402081 is 18020426452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15987326481 + 9475075600 = 126441^2 + 97340^2 .

It is a cyclic number.

It is not a de Polignac number, because 25462402081 - 2⁷ = 25462401953 is a prime.

It is a super-2 number, since 2×25462402081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25462402087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12731201040 + 12731201041.

It is an arithmetic number, because the mean of its divisors is an integer number (12731201041).

Almost surely, 2^25462402081 is an apocalyptic number.

It is an amenable number.

25462402081 is a deficient number, since it is larger than the sum of its proper divisors (1).

25462402081 is an equidigital number, since it uses as much as digits as its factorization.

25462402081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 25462402081 in words is "twenty-five billion, four hundred sixty-two million, four hundred two thousand, eighty-one".