25594661 has 2 divisors, whose sum is σ = 25594662. Its totient is φ = 25594660.

The previous prime is 25594637. The next prime is 25594669. The reversal of 25594661 is 16649552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16654561 + 8940100 = 4081^2 + 2990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25594661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25594669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12797330 + 12797331.

It is an arithmetic number, because the mean of its divisors is an integer number (12797331).

Almost surely, 2^25594661 is an apocalyptic number.

It is an amenable number.

25594661 is a deficient number, since it is larger than the sum of its proper divisors (1).

25594661 is an equidigital number, since it uses as much as digits as its factorization.

25594661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 25594661 is about 5059.1166224945. The cubic root of 25594661 is about 294.7020298791.

The spelling of 25594661 in words is "twenty-five million, five hundred ninety-four thousand, six hundred sixty-one".