20025408 has 112 divisors (see below), whose sum is σ = 58375296. Its totient is φ = 6021120.

The previous prime is 20025403. The next prime is 20025409. The reversal of 20025408 is 80452002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177160 + ... + 177272.

It is an arithmetic number, because the mean of its divisors is an integer number (521208).

Almost surely, 2^20025408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20025408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29187648).

20025408 is an abundant number, since it is smaller than the sum of its proper divisors (38349888).

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

20025408 is a wasteful number, since it uses less digits than its factorization.

20025408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 20025408 is about 4474.9757541243. The cubic root of 20025408 is about 271.5566595558.

The spelling of 20025408 in words is "twenty million, twenty-five thousand, four hundred eight".