18725223 has 16 divisors (see below), whose sum is σ = 27818496. Its totient is φ = 11106240.

The previous prime is 18725207. The next prime is 18725237. The reversal of 18725223 is 32252781.

It is not a de Polignac number, because 18725223 - 2⁴ = 18725207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18725263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4486 + ... + 7587.

It is an arithmetic number, because the mean of its divisors is an integer number (1738656).

Almost surely, 2^18725223 is an apocalyptic number.

18725223 is a deficient number, since it is larger than the sum of its proper divisors (9093273).

18725223 is a wasteful number, since it uses less digits than its factorization.

18725223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12134.

The product of its digits is 6720, while the sum is 30.

The square root of 18725223 is about 4327.2650716128. The cubic root of 18725223 is about 265.5475707512.

The spelling of 18725223 in words is "eighteen million, seven hundred twenty-five thousand, two hundred twenty-three".