18823425 has 12 divisors (see below), whose sum is σ = 31121520. Its totient is φ = 10039120.

The previous prime is 18823421. The next prime is 18823439. The reversal of 18823425 is 52432881.

It is not a de Polignac number, because 18823425 - 2² = 18823421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18823421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125415 + ... + 125564.

It is an arithmetic number, because the mean of its divisors is an integer number (2593460).

Almost surely, 2^18823425 is an apocalyptic number.

18823425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18823425 is a deficient number, since it is larger than the sum of its proper divisors (12298095).

18823425 is a wasteful number, since it uses less digits than its factorization.

18823425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250992 (or 250987 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 18823425 is about 4338.5971234951. The cubic root of 18823425 is about 266.0109715263.

The spelling of 18823425 in words is "eighteen million, eight hundred twenty-three thousand, four hundred twenty-five".