20018325 has 24 divisors (see below), whose sum is σ = 33480000. Its totient is φ = 10552960.

The previous prime is 20018293. The next prime is 20018351. The reversal of 20018325 is 52381002.

It is not a de Polignac number, because 20018325 - 2⁵ = 20018293 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5176 + ... + 8174.

It is an arithmetic number, because the mean of its divisors is an integer number (1395000).

Almost surely, 2^20018325 is an apocalyptic number.

20018325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20018325 is a deficient number, since it is larger than the sum of its proper divisors (13461675).

20018325 is a wasteful number, since it uses less digits than its factorization.

20018325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101 (or 3096 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20018325 is about 4474.1842831962. The cubic root of 20018325 is about 271.5246391905.

Adding to 20018325 its reverse (52381002), we get a palindrome (72399327).

The spelling of 20018325 in words is "twenty million, eighteen thousand, three hundred twenty-five".