4025820 has 48 divisors (see below), whose sum is σ = 11360160. Its totient is φ = 1065216.

The previous prime is 4025807. The next prime is 4025837. The reversal of 4025820 is 285204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13594 + ... + 13886.

It is an arithmetic number, because the mean of its divisors is an integer number (236670).

Almost surely, 2^4025820 is an apocalyptic number.

It is an amenable number.

4025820 is an abundant number, since it is smaller than the sum of its proper divisors (7334340).

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

4025820 is a wasteful number, since it uses less digits than its factorization.

4025820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 532 counting only the distinct ones).

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

The square root of 4025820 is about 2006.4446167288. Note that the first 3 decimals coincide. The cubic root of 4025820 is about 159.0809286998.

The spelling of 4025820 in words is "four million, twenty-five thousand, eight hundred twenty".