20324525 has 24 divisors (see below), whose sum is σ = 28331520. Its totient is φ = 14351040.

The previous prime is 20324483. The next prime is 20324527. The reversal of 20324525 is 52542302.

It is a de Polignac number, because none of the positive numbers 2^k-20324525 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 20324525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20324527) 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 23 ways as a sum of consecutive naturals, for example, 6116 + ... + 8834.

It is an arithmetic number, because the mean of its divisors is an integer number (1180480).

Almost surely, 2^20324525 is an apocalyptic number.

20324525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20324525 is a deficient number, since it is larger than the sum of its proper divisors (8006995).

20324525 is a wasteful number, since it uses less digits than its factorization.

20324525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20324525 is about 4508.2729509203. The cubic root of 20324525 is about 272.9020521928.

Adding to 20324525 its reverse (52542302), we get a palindrome (72866827).

The spelling of 20324525 in words is "twenty million, three hundred twenty-four thousand, five hundred twenty-five".