40305225 has 12 divisors (see below), whose sum is σ = 66638096. Its totient is φ = 21496080.

The previous prime is 40305217. The next prime is 40305227. The reversal of 40305225 is 52250304.

It is not a de Polignac number, because 40305225 - 2³ = 40305217 is a prime.

It is a super-2 number, since 2×40305225² = 3249022324601250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40305227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268627 + ... + 268776.

Almost surely, 2^40305225 is an apocalyptic number.

It is an amenable number.

40305225 is a deficient number, since it is larger than the sum of its proper divisors (26332871).

40305225 is a wasteful number, since it uses less digits than its factorization.

40305225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537416 (or 537411 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40305225 is about 6348.6396180599. The cubic root of 40305225 is about 342.8628651079.

Adding to 40305225 its reverse (52250304), we get a palindrome (92555529).

The spelling of 40305225 in words is "forty million, three hundred five thousand, two hundred twenty-five".