40015625605 has 8 divisors (see below), whose sum is σ = 48021009912. Its totient is φ = 32010994368.

The previous prime is 40015625513. The next prime is 40015625609. The reversal of 40015625605 is 50652651004.

It can be written as a sum of positive squares in 4 ways, for example, as 15225604 + 40000400001 = 3902^2 + 200001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40015625605 - 2²¹ = 40013528453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40015625609) 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 7 ways as a sum of consecutive naturals, for example, 63894 + ... + 290023.

It is an arithmetic number, because the mean of its divisors is an integer number (6002626239).

Almost surely, 2^40015625605 is an apocalyptic number.

It is an amenable number.

40015625605 is a deficient number, since it is larger than the sum of its proper divisors (8005384307).

40015625605 is a wasteful number, since it uses less digits than its factorization.

40015625605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376535.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 40015625605 in words is "forty billion, fifteen million, six hundred twenty-five thousand, six hundred five".