40044425 has 6 divisors (see below), whose sum is σ = 49655118. Its totient is φ = 32035520.

The previous prime is 40044409. The next prime is 40044427. The reversal of 40044425 is 52444004.

It can be written as a sum of positive squares in 3 ways, for example, as 841 + 40043584 = 29^2 + 6328^2 .

It is not a de Polignac number, because 40044425 - 2⁴ = 40044409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40044425.

It is not an unprimeable number, because it can be changed into a prime (40044427) by changing a digit.

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, 800864 + ... + 800913.

It is an arithmetic number, because the mean of its divisors is an integer number (8275853).

Almost surely, 2^40044425 is an apocalyptic number.

It is an amenable number.

40044425 is a deficient number, since it is larger than the sum of its proper divisors (9610693).

40044425 is a wasteful number, since it uses less digits than its factorization.

40044425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601787 (or 1601782 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 40044425 is about 6328.0664503464. The cubic root of 40044425 is about 342.1217519614.

Adding to 40044425 its reverse (52444004), we get a palindrome (92488429).

The spelling of 40044425 in words is "forty million, forty-four thousand, four hundred twenty-five".