40023425 has 18 divisors (see below), whose sum is σ = 53746002. Its totient is φ = 29552640.

The previous prime is 40023419. The next prime is 40023433. The reversal of 40023425 is 52432004.

It can be written as a sum of positive squares in 9 ways, for example, as 13315201 + 26708224 = 3649^2 + 5168^2 .

It is not a de Polignac number, because 40023425 - 2¹⁴ = 40007041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40023397 and 40023406.

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 17 ways as a sum of consecutive naturals, for example, 512 + ... + 8961.

It is an arithmetic number, because the mean of its divisors is an integer number (2985889).

Almost surely, 2^40023425 is an apocalyptic number.

It is an amenable number.

40023425 is a deficient number, since it is larger than the sum of its proper divisors (13722577).

40023425 is a wasteful number, since it uses less digits than its factorization.

40023425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9509 (or 9491 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 40023425 is about 6326.4069581398. The cubic root of 40023425 is about 342.0619366183.

Adding to 40023425 its reverse (52432004), we get a palindrome (92455429).

The spelling of 40023425 in words is "forty million, twenty-three thousand, four hundred twenty-five".