40031425 has 12 divisors (see below), whose sum is σ = 56730496. Its totient is φ = 27450000.

The previous prime is 40031419. The next prime is 40031473. The reversal of 40031425 is 52413004.

It is a de Polignac number, because none of the positive numbers 2^k-40031425 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 114201 + ... + 114550.

Almost surely, 2^40031425 is an apocalyptic number.

It is an amenable number.

40031425 is a deficient number, since it is larger than the sum of its proper divisors (16699071).

40031425 is a wasteful number, since it uses less digits than its factorization.

40031425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228768 (or 228763 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40031425 is about 6327.0391969704. The cubic root of 40031425 is about 342.0847258823.

Adding to 40031425 its reverse (52413004), we get a palindrome (92444429).

The spelling of 40031425 in words is "forty million, thirty-one thousand, four hundred twenty-five".