25995961 has 2 divisors, whose sum is σ = 25995962. Its totient is φ = 25995960.

The previous prime is 25995953. The next prime is 25996007. The reversal of 25995961 is 16959952.

It is an a-pointer prime, because the next prime (25996007) can be obtained adding 25995961 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24157225 + 1838736 = 4915^2 + 1356^2 .

It is a cyclic number.

It is not a de Polignac number, because 25995961 - 2³ = 25995953 is a prime.

It is not a weakly prime, because it can be changed into another prime (25995061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12997980 + 12997981.

It is an arithmetic number, because the mean of its divisors is an integer number (12997981).

Almost surely, 2^25995961 is an apocalyptic number.

It is an amenable number.

25995961 is a deficient number, since it is larger than the sum of its proper divisors (1).

25995961 is an equidigital number, since it uses as much as digits as its factorization.

25995961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 218700, while the sum is 46.

The square root of 25995961 is about 5098.6234416752. The cubic root of 25995961 is about 296.2342656340.

The spelling of 25995961 in words is "twenty-five million, nine hundred ninety-five thousand, nine hundred sixty-one".