20325172 has 24 divisors (see below), whose sum is σ = 42053760. Its totient is φ = 8410080.

The previous prime is 20325167. The next prime is 20325191. The reversal of 20325172 is 27152302.

It is a super-2 number, since 2×20325172² = 826225233659168, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 11704 + ... + 13327.

It is an arithmetic number, because the mean of its divisors is an integer number (1752240).

Almost surely, 2^20325172 is an apocalyptic number.

It is an amenable number.

20325172 is an abundant number, since it is smaller than the sum of its proper divisors (21728588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20325172 is a wasteful number, since it uses less digits than its factorization.

20325172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25071 (or 25069 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20325172 is about 4508.3447073178. The cubic root of 20325172 is about 272.9049479678.

Adding to 20325172 its reverse (27152302), we get a palindrome (47477474).

The spelling of 20325172 in words is "twenty million, three hundred twenty-five thousand, one hundred seventy-two".