25606577 has 2 divisors, whose sum is σ = 25606578. Its totient is φ = 25606576.

The previous prime is 25606571. The next prime is 25606597. The reversal of 25606577 is 77560652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17631601 + 7974976 = 4199^2 + 2824^2 .

It is a cyclic number.

It is not a de Polignac number, because 25606577 - 2⁴ = 25606561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25606577.

It is not a weakly prime, because it can be changed into another prime (25606571) 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, 12803288 + 12803289.

It is an arithmetic number, because the mean of its divisors is an integer number (12803289).

Almost surely, 2^25606577 is an apocalyptic number.

It is an amenable number.

25606577 is a deficient number, since it is larger than the sum of its proper divisors (1).

25606577 is an equidigital number, since it uses as much as digits as its factorization.

25606577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 25606577 is about 5060.2941614100. The cubic root of 25606577 is about 294.7477571834.

The spelling of 25606577 in words is "twenty-five million, six hundred six thousand, five hundred seventy-seven".