20025320 has 96 divisors (see below), whose sum is σ = 55588680. Its totient is φ = 6451200.

The previous prime is 20025311. The next prime is 20025329. The reversal of 20025320 is 2352002.

It is an interprime number because it is at equal distance from previous prime (20025311) and next prime (20025329).

It can be written as a sum of positive squares in 4 ways, for example, as 19695844 + 329476 = 4438^2 + 574^2 .

It is a super-2 number, since 2×20025320² = 802026882204800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20025295 and 20025304.

It is not an unprimeable number, because it can be changed into a prime (20025329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33020 + ... + 33620.

Almost surely, 2^20025320 is an apocalyptic number.

20025320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20025320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27794340).

20025320 is an abundant number, since it is smaller than the sum of its proper divisors (35563360).

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

20025320 is a wasteful number, since it uses less digits than its factorization.

20025320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 20025320 is about 4474.9659216580. The cubic root of 20025320 is about 271.5562617774.

Adding to 20025320 its reverse (2352002), we get a palindrome (22377322).

The spelling of 20025320 in words is "twenty million, twenty-five thousand, three hundred twenty".