40540405425 has 48 divisors (see below), whose sum is σ = 72845129280. Its totient is φ = 19775197440.

The previous prime is 40540405391. The next prime is 40540405487. The reversal of 40540405425 is 52450404504.

It is not a de Polignac number, because 40540405425 - 2²⁰ = 40539356849 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84459 + ... + 297008.

It is an arithmetic number, because the mean of its divisors is an integer number (1517606860).

Almost surely, 2^40540405425 is an apocalyptic number.

It is an amenable number.

40540405425 is a deficient number, since it is larger than the sum of its proper divisors (32304723855).

40540405425 is a wasteful number, since it uses less digits than its factorization.

40540405425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381602 (or 381597 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 33.

Adding to 40540405425 its reverse (52450404504), we get a palindrome (92990809929).

The spelling of 40540405425 in words is "forty billion, five hundred forty million, four hundred five thousand, four hundred twenty-five".