40216225 has 24 divisors (see below), whose sum is σ = 58541888. Its totient is φ = 26827200.

The previous prime is 40216219. The next prime is 40216273. The reversal of 40216225 is 52261204.

It is not a de Polignac number, because 40216225 - 2⁵ = 40216193 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 40216196 and 40216205.

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, 3370 + ... + 9580.

Almost surely, 2^40216225 is an apocalyptic number.

It is an amenable number.

40216225 is a deficient number, since it is larger than the sum of its proper divisors (18325663).

40216225 is a wasteful number, since it uses less digits than its factorization.

40216225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265 (or 6260 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 40216225 is about 6341.6263686849. The cubic root of 40216225 is about 342.6103148657.

Adding to 40216225 its reverse (52261204), we get a palindrome (92477429).

The spelling of 40216225 in words is "forty million, two hundred sixteen thousand, two hundred twenty-five".