40220425 has 18 divisors (see below), whose sum is σ = 58017678. Its totient is φ = 27578880.

The previous prime is 40220407. The next prime is 40220441. The reversal of 40220425 is 52402204.

40220425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4064256 + 36156169 = 2016^2 + 6013^2 .

It is not a de Polignac number, because 40220425 - 2⁵ = 40220393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 15192 + ... + 17641.

Almost surely, 2^40220425 is an apocalyptic number.

It is an amenable number.

40220425 is a deficient number, since it is larger than the sum of its proper divisors (17797253).

40220425 is a wasteful number, since it uses less digits than its factorization.

40220425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32857 (or 32845 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40220425 is about 6341.9575053764. The cubic root of 40220425 is about 342.6222413392.

Adding to 40220425 its reverse (52402204), we get a palindrome (92622629).

The spelling of 40220425 in words is "forty million, two hundred twenty thousand, four hundred twenty-five".