25830605 has 4 divisors (see below), whose sum is σ = 30996732. Its totient is φ = 20664480.

The previous prime is 25830583. The next prime is 25830611. The reversal of 25830605 is 50603852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8282884 + 17547721 = 2878^2 + 4189^2 .

It is not a de Polignac number, because 25830605 - 2⁸ = 25830349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2583056 + ... + 2583065.

It is an arithmetic number, because the mean of its divisors is an integer number (7749183).

Almost surely, 2^25830605 is an apocalyptic number.

It is an amenable number.

25830605 is a deficient number, since it is larger than the sum of its proper divisors (5166127).

25830605 is an equidigital number, since it uses as much as digits as its factorization.

25830605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166126.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 25830605 is about 5082.3818235154. The cubic root of 25830605 is about 295.6048301388.

The spelling of 25830605 in words is "twenty-five million, eight hundred thirty thousand, six hundred five".