40655725265 has 4 divisors (see below), whose sum is σ = 48786870324. Its totient is φ = 32524580208.

The previous prime is 40655725261. The next prime is 40655725277. The reversal of 40655725265 is 56252755604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7627751569 + 33027973696 = 87337^2 + 181736^2 .

It is a cyclic number.

It is not a de Polignac number, because 40655725265 - 2² = 40655725261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40655725261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4065572522 + ... + 4065572531.

It is an arithmetic number, because the mean of its divisors is an integer number (12196717581).

Almost surely, 2^40655725265 is an apocalyptic number.

It is an amenable number.

40655725265 is a deficient number, since it is larger than the sum of its proper divisors (8131145059).

40655725265 is an equidigital number, since it uses as much as digits as its factorization.

40655725265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8131145058.

The product of its (nonzero) digits is 2520000, while the sum is 47.

The spelling of 40655725265 in words is "forty billion, six hundred fifty-five million, seven hundred twenty-five thousand, two hundred sixty-five".