25327609 has 2 divisors, whose sum is σ = 25327610. Its totient is φ = 25327608.

The previous prime is 25327591. The next prime is 25327613. The reversal of 25327609 is 90672352.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14745600 + 10582009 = 3840^2 + 3253^2 .

It is a cyclic number.

It is not a de Polignac number, because 25327609 - 2¹¹ = 25325561 is a prime.

It is not a weakly prime, because it can be changed into another prime (25327109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12663804 + 12663805.

It is an arithmetic number, because the mean of its divisors is an integer number (12663805).

Almost surely, 2^25327609 is an apocalyptic number.

It is an amenable number.

25327609 is a deficient number, since it is larger than the sum of its proper divisors (1).

25327609 is an equidigital number, since it uses as much as digits as its factorization.

25327609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 25327609 is about 5032.6542698660. The cubic root of 25327609 is about 293.6734809596.

The spelling of 25327609 in words is "twenty-five million, three hundred twenty-seven thousand, six hundred nine".