25606049 has 8 divisors (see below), whose sum is σ = 29816640. Its totient is φ = 21533616.

The previous prime is 25606039. The next prime is 25606051. The reversal of 25606049 is 94060652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25606049 - 2¹⁶ = 25540513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25606019) 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 in 7 ways as a sum of consecutive naturals, for example, 34139 + ... + 34880.

It is an arithmetic number, because the mean of its divisors is an integer number (3727080).

Almost surely, 2^25606049 is an apocalyptic number.

It is an amenable number.

25606049 is a deficient number, since it is larger than the sum of its proper divisors (4210591).

25606049 is an equidigital number, since it uses as much as digits as its factorization.

25606049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69079.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 25606049 is about 5060.2419902609. The cubic root of 25606049 is about 294.7457312991.

The spelling of 25606049 in words is "twenty-five million, six hundred six thousand, forty-nine".