40785625 has 10 divisors (see below), whose sum is σ = 50966498. Its totient is φ = 32628000.

The previous prime is 40785623. The next prime is 40785649. The reversal of 40785625 is 52658704.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 24334489 + 16451136 = 4933^2 + 4056^2 .

It is not a de Polignac number, because 40785625 - 2¹ = 40785623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40785623) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32004 + ... + 33253.

Almost surely, 2^40785625 is an apocalyptic number.

It is an amenable number.

40785625 is a deficient number, since it is larger than the sum of its proper divisors (10180873).

40785625 is an frugal number, since it uses more digits than its factorization.

40785625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65277 (or 65262 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 40785625 is about 6386.3624231639. The cubic root of 40785625 is about 344.2196885195.

The spelling of 40785625 in words is "forty million, seven hundred eighty-five thousand, six hundred twenty-five".