40065725 has 24 divisors (see below), whose sum is σ = 57049920. Its totient is φ = 27342720.

The previous prime is 40065713. The next prime is 40065763. The reversal of 40065725 is 52756004.

It is not a de Polignac number, because 40065725 - 2¹⁰ = 40064701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49121 + ... + 49929.

It is an arithmetic number, because the mean of its divisors is an integer number (2377080).

Almost surely, 2^40065725 is an apocalyptic number.

It is an amenable number.

40065725 is a deficient number, since it is larger than the sum of its proper divisors (16984195).

40065725 is a wasteful number, since it uses less digits than its factorization.

40065725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1104 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 40065725 is about 6329.7492051423. The cubic root of 40065725 is about 342.1824004508.

The spelling of 40065725 in words is "forty million, sixty-five thousand, seven hundred twenty-five".