40025220 has 48 divisors (see below), whose sum is σ = 115940160. Its totient is φ = 10304896.

The previous prime is 40025203. The next prime is 40025239. The reversal of 40025220 is 2252004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40025220.

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 15 ways as a sum of consecutive naturals, for example, 9762 + ... + 13241.

It is an arithmetic number, because the mean of its divisors is an integer number (2415420).

Almost surely, 2^40025220 is an apocalyptic number.

It is an amenable number.

40025220 is an abundant number, since it is smaller than the sum of its proper divisors (75914940).

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

40025220 is a wasteful number, since it uses less digits than its factorization.

40025220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23044 (or 23042 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 40025220 is about 6326.5488222253. The cubic root of 40025220 is about 342.0670502237.

Adding to 40025220 its reverse (2252004), we get a palindrome (42277224).

The spelling of 40025220 in words is "forty million, twenty-five thousand, two hundred twenty".