40725506 has 16 divisors (see below), whose sum is σ = 66769920. Its totient is φ = 18546240.

The previous prime is 40725499. The next prime is 40725511. The reversal of 40725506 is 60552704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18266 + ... + 20373.

It is an arithmetic number, because the mean of its divisors is an integer number (4173120).

Almost surely, 2^40725506 is an apocalyptic number.

40725506 is a deficient number, since it is larger than the sum of its proper divisors (26044414).

40725506 is a wasteful number, since it uses less digits than its factorization.

40725506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38689.

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

The square root of 40725506 is about 6381.6538608734. The cubic root of 40725506 is about 344.0504759626.

The spelling of 40725506 in words is "forty million, seven hundred twenty-five thousand, five hundred six".