40525820 has 24 divisors (see below), whose sum is σ = 85418928. Its totient is φ = 16150400.

The previous prime is 40525817. The next prime is 40525843. The reversal of 40525820 is 2852504.

It is a self number, because there is not a number n which added to its sum of digits gives 40525820.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2015 + ... + 9225.

It is an arithmetic number, because the mean of its divisors is an integer number (3559122).

Almost surely, 2^40525820 is an apocalyptic number.

It is an amenable number.

40525820 is an abundant number, since it is smaller than the sum of its proper divisors (44893108).

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

40525820 is a wasteful number, since it uses less digits than its factorization.

40525820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7501 (or 7499 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 40525820 is about 6365.9893182443. The cubic root of 40525820 is about 343.4872363287.

The spelling of 40525820 in words is "forty million, five hundred twenty-five thousand, eight hundred twenty".