40405325 has 12 divisors (see below), whose sum is σ = 50288448. Its totient is φ = 32204400.

The previous prime is 40405237. The next prime is 40405331. The reversal of 40405325 is 52350404.

It is not a de Polignac number, because 40405325 - 2⁸ = 40405069 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 40405325.

It is a congruent 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, 4220 + ... + 9930.

It is an arithmetic number, because the mean of its divisors is an integer number (4190704).

Almost surely, 2^40405325 is an apocalyptic number.

It is an amenable number.

40405325 is a deficient number, since it is larger than the sum of its proper divisors (9883123).

40405325 is a wasteful number, since it uses less digits than its factorization.

40405325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004 (or 5999 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 40405325 is about 6356.5183080048. The cubic root of 40405325 is about 343.1464693607.

Adding to 40405325 its reverse (52350404), we get a palindrome (92755729).

The spelling of 40405325 in words is "forty million, four hundred five thousand, three hundred twenty-five".