40140225 has 24 divisors (see below), whose sum is σ = 73740320. Its totient is φ = 21407760.

The previous prime is 40140203. The next prime is 40140229. The reversal of 40140225 is 52204104.

40140225 is a `hidden beast` number, since 401 + 40 + 225 = 666.

40140225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40140225 - 2⁵ = 40140193 is a prime.

It is a super-2 number, since 2×40140225² = 3222475326101250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40140198 and 40140207.

It is not an unprimeable number, because it can be changed into a prime (40140229) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 29059 + ... + 30408.

Almost surely, 2^40140225 is an apocalyptic number.

40140225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40140225 is a deficient number, since it is larger than the sum of its proper divisors (33600095).

40140225 is a wasteful number, since it uses less digits than its factorization.

40140225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59486 (or 59475 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40140225 is about 6335.6313813226. The cubic root of 40140225 is about 342.3943588804.

Adding to 40140225 its reverse (52204104), we get a palindrome (92344329).

The spelling of 40140225 in words is "forty million, one hundred forty thousand, two hundred twenty-five".