40018425 has 24 divisors (see below), whose sum is σ = 70058016. Its totient is φ = 20087040.

The previous prime is 40018421. The next prime is 40018439. The reversal of 40018425 is 52481004.

40018425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40018425 - 2² = 40018421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40018395 and 40018404.

It is not an unprimeable number, because it can be changed into a prime (40018421) 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 23 ways as a sum of consecutive naturals, for example, 14419 + ... + 16968.

It is an arithmetic number, because the mean of its divisors is an integer number (2919084).

Almost surely, 2^40018425 is an apocalyptic number.

It is an amenable number.

40018425 is a deficient number, since it is larger than the sum of its proper divisors (30039591).

40018425 is a wasteful number, since it uses less digits than its factorization.

40018425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31417 (or 31412 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 40018425 is about 6326.0117767832. The cubic root of 40018425 is about 342.0476917862.

Adding to 40018425 its reverse (52481004), we get a palindrome (92499429).

The spelling of 40018425 in words is "forty million, eighteen thousand, four hundred twenty-five".