40225240 has 48 divisors (see below), whose sum is σ = 99494640. Its totient is φ = 14625600.

The previous prime is 40225219. The next prime is 40225243. The reversal of 40225240 is 4252204.

40225240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40225243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 685 + ... + 8995.

It is an arithmetic number, because the mean of its divisors is an integer number (2072805).

Almost surely, 2^40225240 is an apocalyptic number.

40225240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40225240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49747320).

40225240 is an abundant number, since it is smaller than the sum of its proper divisors (59269400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40225240 is a wasteful number, since it uses less digits than its factorization.

40225240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8344 (or 8329 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40225240 is about 6342.3371086690. The cubic root of 40225240 is about 342.6359131678.

Adding to 40225240 its reverse (4252204), we get a palindrome (44477444).

The spelling of 40225240 in words is "forty million, two hundred twenty-five thousand, two hundred forty".