25422166 has 16 divisors (see below), whose sum is σ = 47543040. Its totient is φ = 9904680.

The previous prime is 25422161. The next prime is 25422167. The reversal of 25422166 is 66122452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25422161) 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, 82386 + ... + 82693.

It is an arithmetic number, because the mean of its divisors is an integer number (2971440).

Almost surely, 2^25422166 is an apocalyptic number.

25422166 is a deficient number, since it is larger than the sum of its proper divisors (22120874).

25422166 is a wasteful number, since it uses less digits than its factorization.

25422166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165099.

The product of its digits is 5760, while the sum is 28.

The square root of 25422166 is about 5042.0398649753. The cubic root of 25422166 is about 294.0384897238.

The spelling of 25422166 in words is "twenty-five million, four hundred twenty-two thousand, one hundred sixty-six".