25360609 has 2 divisors, whose sum is σ = 25360610. Its totient is φ = 25360608.

The previous prime is 25360607. The next prime is 25360633. The reversal of 25360609 is 90606352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15626209 + 9734400 = 3953^2 + 3120^2 .

It is a cyclic number.

It is not a de Polignac number, because 25360609 - 2¹ = 25360607 is a prime.

Together with 25360607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25360603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12680304 + 12680305.

It is an arithmetic number, because the mean of its divisors is an integer number (12680305).

Almost surely, 2^25360609 is an apocalyptic number.

It is an amenable number.

25360609 is a deficient number, since it is larger than the sum of its proper divisors (1).

25360609 is an equidigital number, since it uses as much as digits as its factorization.

25360609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 25360609 is about 5035.9317906421. The cubic root of 25360609 is about 293.8009705426.

The spelling of 25360609 in words is "twenty-five million, three hundred sixty thousand, six hundred nine".