40171225 has 24 divisors (see below), whose sum is σ = 54728640. Its totient is φ = 29113920.

The previous prime is 40171217. The next prime is 40171237. The reversal of 40171225 is 52217104.

It is a happy number.

It is not a de Polignac number, because 40171225 - 2³ = 40171217 is a prime.

It is a super-2 number, since 2×40171225² = 3227454636001250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40171196 and 40171205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9087 + ... + 12763.

It is an arithmetic number, because the mean of its divisors is an integer number (2280360).

Almost surely, 2^40171225 is an apocalyptic number.

It is an amenable number.

40171225 is a deficient number, since it is larger than the sum of its proper divisors (14557415).

40171225 is a wasteful number, since it uses less digits than its factorization.

40171225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729 (or 3724 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 40171225 is about 6338.0773898715. The cubic root of 40171225 is about 342.4824790796.

Adding to 40171225 its reverse (52217104), we get a palindrome (92388329).

The spelling of 40171225 in words is "forty million, one hundred seventy-one thousand, two hundred twenty-five".