25522665 has 16 divisors (see below), whose sum is σ = 46670208. Its totient is φ = 11667456.

The previous prime is 25522649. The next prime is 25522669. The reversal of 25522665 is 56622552.

It is not a de Polignac number, because 25522665 - 2⁴ = 25522649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25522669) 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 15 ways as a sum of consecutive naturals, for example, 121432 + ... + 121641.

It is an arithmetic number, because the mean of its divisors is an integer number (2916888).

Almost surely, 2^25522665 is an apocalyptic number.

It is an amenable number.

25522665 is a deficient number, since it is larger than the sum of its proper divisors (21147543).

25522665 is a wasteful number, since it uses less digits than its factorization.

25522665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243088.

The product of its digits is 36000, while the sum is 33.

The square root of 25522665 is about 5051.9961401410. The cubic root of 25522665 is about 294.4254449458.

The spelling of 25522665 in words is "twenty-five million, five hundred twenty-two thousand, six hundred sixty-five".