25166009 has 8 divisors (see below), whose sum is σ = 28038528. Its totient is φ = 22390960.

The previous prime is 25165999. The next prime is 25166023. The reversal of 25166009 is 90066152.

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 25166009 - 2⁴ = 25165993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25169009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23822 + ... + 24855.

It is an arithmetic number, because the mean of its divisors is an integer number (3504816).

Almost surely, 2^25166009 is an apocalyptic number.

It is an amenable number.

25166009 is a deficient number, since it is larger than the sum of its proper divisors (2872519).

25166009 is a wasteful number, since it uses less digits than its factorization.

25166009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48735.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 25166009 is about 5016.5734321347. The cubic root of 25166009 is about 293.0475641777.

The spelling of 25166009 in words is "twenty-five million, one hundred sixty-six thousand, nine".