24225809 has 4 divisors (see below), whose sum is σ = 24239616. Its totient is φ = 24212004.

The previous prime is 24225797. The next prime is 24225811. The reversal of 24225809 is 90852242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 24225809 - 2¹⁶ = 24160273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24225109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3809 + ... + 7934.

It is an arithmetic number, because the mean of its divisors is an integer number (6059904).

Almost surely, 2^24225809 is an apocalyptic number.

It is an amenable number.

24225809 is a deficient number, since it is larger than the sum of its proper divisors (13807).

24225809 is a wasteful number, since it uses less digits than its factorization.

24225809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13806.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 24225809 is about 4921.9720641223. The cubic root of 24225809 is about 289.3517386493.

The spelling of 24225809 in words is "twenty-four million, two hundred twenty-five thousand, eight hundred nine".