40402225 has 12 divisors (see below), whose sum is σ = 50200780. Its totient is φ = 32256000.

The previous prime is 40402177. The next prime is 40402253. The reversal of 40402225 is 52220404.

40402225 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 6 ways, for example, as 2505889 + 37896336 = 1583^2 + 6156^2 .

It is not a de Polignac number, because 40402225 - 2²¹ = 38305073 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 13681 + ... + 16369.

Almost surely, 2^40402225 is an apocalyptic number.

It is an amenable number.

40402225 is a deficient number, since it is larger than the sum of its proper divisors (9798555).

40402225 is a wasteful number, since it uses less digits than its factorization.

40402225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300 (or 3295 counting only the distinct ones).

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

The square root of 40402225 is about 6356.2744591466. The cubic root of 40402225 is about 343.1376934443.

Adding to 40402225 its reverse (52220404), we get a palindrome (92622629).

The spelling of 40402225 in words is "forty million, four hundred two thousand, two hundred twenty-five".