240420225 has 12 divisors (see below), whose sum is σ = 397494896. Its totient is φ = 128224080.

The previous prime is 240420217. The next prime is 240420227. The reversal of 240420225 is 522024042.

It is not a de Polignac number, because 240420225 - 2³ = 240420217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240420227) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1602727 + ... + 1602876.

Almost surely, 2^240420225 is an apocalyptic number.

240420225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

240420225 is a deficient number, since it is larger than the sum of its proper divisors (157074671).

240420225 is a wasteful number, since it uses less digits than its factorization.

240420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205616 (or 3205611 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 240420225 is about 15505.4901567155. The cubic root of 240420225 is about 621.8089943664.

Adding to 240420225 its reverse (522024042), we get a palindrome (762444267).

The spelling of 240420225 in words is "two hundred forty million, four hundred twenty thousand, two hundred twenty-five".