18823725 has 48 divisors (see below), whose sum is σ = 35116800. Its totient is φ = 9884160.

The previous prime is 18823711. The next prime is 18823741. The reversal of 18823725 is 52732881.

It is not a de Polignac number, because 18823725 - 2⁹ = 18823213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18823725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53149 + ... + 53501.

It is an arithmetic number, because the mean of its divisors is an integer number (731600).

Almost surely, 2^18823725 is an apocalyptic number.

18823725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18823725 is a deficient number, since it is larger than the sum of its proper divisors (16293075).

18823725 is a wasteful number, since it uses less digits than its factorization.

18823725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 440 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 18823725 is about 4338.6316967450. The cubic root of 18823725 is about 266.0123847099.

The spelling of 18823725 in words is "eighteen million, eight hundred twenty-three thousand, seven hundred twenty-five".