18241925 has 36 divisors (see below), whose sum is σ = 25646796. Its totient is φ = 12787200.

The previous prime is 18241879. The next prime is 18241939. The reversal of 18241925 is 52914281.

It can be written as a sum of positive squares in 18 ways, for example, as 12061729 + 6180196 = 3473^2 + 2486^2 .

It is not a de Polignac number, because 18241925 - 2⁸ = 18241669 is a prime.

It is a Duffinian number.

Its product of digits (5760) is a multiple of the sum of its prime divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 18241891 and 18241900.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 444905 + ... + 444945.

It is an arithmetic number, because the mean of its divisors is an integer number (712411).

Almost surely, 2^18241925 is an apocalyptic number.

It is an amenable number.

18241925 is a deficient number, since it is larger than the sum of its proper divisors (7404871).

18241925 is a wasteful number, since it uses less digits than its factorization.

18241925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 96 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 18241925 is about 4271.0566608276. The cubic root of 18241925 is about 263.2430346095.

The spelling of 18241925 in words is "eighteen million, two hundred forty-one thousand, nine hundred twenty-five".