40109505825 has 24 divisors (see below), whose sum is σ = 66370680576. Its totient is φ = 21373576000.

The previous prime is 40109505773. The next prime is 40109505829. The reversal of 40109505825 is 52850590104.

It is not a de Polignac number, because 40109505825 - 2⁷ = 40109505697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40109505829) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 137841 + ... + 314990.

It is an arithmetic number, because the mean of its divisors is an integer number (2765445024).

Almost surely, 2^40109505825 is an apocalyptic number.

It is an amenable number.

40109505825 is a deficient number, since it is larger than the sum of its proper divisors (26261174751).

40109505825 is a wasteful number, since it uses less digits than its factorization.

40109505825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454025 (or 454020 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 40109505825 in words is "forty billion, one hundred nine million, five hundred five thousand, eight hundred twenty-five".