40002425 has 6 divisors (see below), whose sum is σ = 49603038. Its totient is φ = 32001920.

The previous prime is 40002421. The next prime is 40002433. The reversal of 40002425 is 52420004.

40002425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 12931216 + 27071209 = 3596^2 + 5203^2 .

It is not a de Polignac number, because 40002425 - 2² = 40002421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40002421) 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 5 ways as a sum of consecutive naturals, for example, 800024 + ... + 800073.

It is an arithmetic number, because the mean of its divisors is an integer number (8267173).

Almost surely, 2^40002425 is an apocalyptic number.

It is an amenable number.

40002425 is a deficient number, since it is larger than the sum of its proper divisors (9600613).

40002425 is a wasteful number, since it uses less digits than its factorization.

40002425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600107 (or 1600102 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 40002425 is about 6324.7470305143. The cubic root of 40002425 is about 342.0021003485.

Adding to 40002425 its reverse (52420004), we get a palindrome (92422429).

The spelling of 40002425 in words is "forty million, two thousand, four hundred twenty-five".