40516225 has 24 divisors (see below), whose sum is σ = 54139392. Its totient is φ = 29990400.

The previous prime is 40516213. The next prime is 40516247. The reversal of 40516225 is 52261504.

It is not a de Polignac number, because 40516225 - 2⁵ = 40516193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 40516225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16689 + ... + 18961.

It is an arithmetic number, because the mean of its divisors is an integer number (2255808).

Almost surely, 2^40516225 is an apocalyptic number.

It is an amenable number.

40516225 is a deficient number, since it is larger than the sum of its proper divisors (13623167).

40516225 is a wasteful number, since it uses less digits than its factorization.

40516225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337 (or 2332 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40516225 is about 6365.2356594238. The cubic root of 40516225 is about 343.4601258744.

Adding to 40516225 its reverse (52261504), we get a palindrome (92777729).

The spelling of 40516225 in words is "forty million, five hundred sixteen thousand, two hundred twenty-five".