40506425 has 6 divisors (see below), whose sum is σ = 50227998. Its totient is φ = 32405120.

The previous prime is 40506419. The next prime is 40506443. The reversal of 40506425 is 52460504.

It can be written as a sum of positive squares in 3 ways, for example, as 5929 + 40500496 = 77^2 + 6364^2 .

It is not a de Polignac number, because 40506425 - 2⁴ = 40506409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40506394 and 40506403.

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 5 ways as a sum of consecutive naturals, for example, 810104 + ... + 810153.

It is an arithmetic number, because the mean of its divisors is an integer number (8371333).

Almost surely, 2^40506425 is an apocalyptic number.

It is an amenable number.

40506425 is a deficient number, since it is larger than the sum of its proper divisors (9721573).

40506425 is a wasteful number, since it uses less digits than its factorization.

40506425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620267 (or 1620262 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40506425 is about 6364.4658063344. The cubic root of 40506425 is about 343.4324317786.

Adding to 40506425 its reverse (52460504), we get a palindrome (92966929).

The spelling of 40506425 in words is "forty million, five hundred six thousand, four hundred twenty-five".