25956481 has 2 divisors, whose sum is σ = 25956482. Its totient is φ = 25956480.

The previous prime is 25956461. The next prime is 25956493. The reversal of 25956481 is 18465952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16128256 + 9828225 = 4016^2 + 3135^2 .

It is a cyclic number.

It is not a de Polignac number, because 25956481 - 2⁵ = 25956449 is a prime.

It is a super-3 number, since 3×25956481³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (25956461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12978240 + 12978241.

It is an arithmetic number, because the mean of its divisors is an integer number (12978241).

Almost surely, 2^25956481 is an apocalyptic number.

It is an amenable number.

25956481 is a deficient number, since it is larger than the sum of its proper divisors (1).

25956481 is an equidigital number, since it uses as much as digits as its factorization.

25956481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The square root of 25956481 is about 5094.7503373571. The cubic root of 25956481 is about 296.0842262444.

The spelling of 25956481 in words is "twenty-five million, nine hundred fifty-six thousand, four hundred eighty-one".