40725890 has 8 divisors (see below), whose sum is σ = 73306620. Its totient is φ = 16290352.

The previous prime is 40725887. The next prime is 40725907. The reversal of 40725890 is 9852704.

It is a happy number.

40725890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 37736449 + 2989441 = 6143^2 + 1729^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 40725890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2036285 + ... + 2036304.

Almost surely, 2^40725890 is an apocalyptic number.

40725890 is a deficient number, since it is larger than the sum of its proper divisors (32580730).

40725890 is a wasteful number, since it uses less digits than its factorization.

40725890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072596.

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

The square root of 40725890 is about 6381.6839470472. The cubic root of 40725890 is about 344.0515573076.

The spelling of 40725890 in words is "forty million, seven hundred twenty-five thousand, eight hundred ninety".