25110661 has 2 divisors, whose sum is σ = 25110662. Its totient is φ = 25110660.

The previous prime is 25110623. The next prime is 25110671. The reversal of 25110661 is 16601152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25060036 + 50625 = 5006^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 25110661 - 2⁹ = 25110149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25110611) 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, 12555330 + 12555331.

It is an arithmetic number, because the mean of its divisors is an integer number (12555331).

Almost surely, 2^25110661 is an apocalyptic number.

It is an amenable number.

25110661 is a deficient number, since it is larger than the sum of its proper divisors (1).

25110661 is an equidigital number, since it uses as much as digits as its factorization.

25110661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 25110661 is about 5011.0538811711. The cubic root of 25110661 is about 292.8325717806.

The spelling of 25110661 in words is "twenty-five million, one hundred ten thousand, six hundred sixty-one".