20323525 has 12 divisors (see below), whose sum is σ = 25257312. Its totient is φ = 16222640.

The previous prime is 20323489. The next prime is 20323529. The reversal of 20323525 is 52532302.

It is not a de Polignac number, because 20323525 - 2⁹ = 20323013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20323496 and 20323505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20184 + ... + 21166.

It is an arithmetic number, because the mean of its divisors is an integer number (2104776).

Almost surely, 2^20323525 is an apocalyptic number.

20323525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20323525 is a deficient number, since it is larger than the sum of its proper divisors (4933787).

20323525 is an equidigital number, since it uses as much as digits as its factorization.

20323525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820 (or 1815 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 20323525 is about 4508.1620423405. The cubic root of 20323525 is about 272.8975763764.

Adding to 20323525 its reverse (52532302), we get a palindrome (72855827).

The spelling of 20323525 in words is "twenty million, three hundred twenty-three thousand, five hundred twenty-five".