40825709 has 8 divisors (see below), whose sum is σ = 41912640. Its totient is φ = 39743200.

The previous prime is 40825691. The next prime is 40825711. The reversal of 40825709 is 90752804.

It is a happy number.

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 40825709 - 2⁸ = 40825453 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 (40825739) 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 7 ways as a sum of consecutive naturals, for example, 26264 + ... + 27774.

It is an arithmetic number, because the mean of its divisors is an integer number (5239080).

Almost surely, 2^40825709 is an apocalyptic number.

It is an amenable number.

40825709 is a deficient number, since it is larger than the sum of its proper divisors (1086931).

40825709 is a wasteful number, since it uses less digits than its factorization.

40825709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 40825709 is about 6389.4999021833. The cubic root of 40825709 is about 344.3324176518.

The spelling of 40825709 in words is "forty million, eight hundred twenty-five thousand, seven hundred nine".