40605125265 has 24 divisors (see below), whose sum is σ = 71027934120. Its totient is φ = 21457384704.

The previous prime is 40605125261. The next prime is 40605125273. The reversal of 40605125265 is 56252150604.

40605125265 is a `hidden beast` number, since 4 + 0 + 605 + 1 + 25 + 26 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19090396224 + 21514729041 = 138168^2 + 146679^2 .

It is not a de Polignac number, because 40605125265 - 2² = 40605125261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40605125261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4134252 + ... + 4144061.

It is an arithmetic number, because the mean of its divisors is an integer number (2959497255).

Almost surely, 2^40605125265 is an apocalyptic number.

40605125265 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40605125265 is a deficient number, since it is larger than the sum of its proper divisors (30422808855).

40605125265 is a wasteful number, since it uses less digits than its factorization.

40605125265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8278433 (or 8278430 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 40605125265 its reverse (56252150604), we get a palindrome (96857275869).

The spelling of 40605125265 in words is "forty billion, six hundred five million, one hundred twenty-five thousand, two hundred sixty-five".