40256605 has 8 divisors (see below), whose sum is σ = 48348000. Its totient is φ = 32178576.

The previous prime is 40256591. The next prime is 40256617. The reversal of 40256605 is 50665204.

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 40256605 - 2⁷ = 40256477 is a prime.

It is a super-2 number, since 2×40256605² = 3241188492252050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5346 + ... + 10444.

It is an arithmetic number, because the mean of its divisors is an integer number (6043500).

Almost surely, 2^40256605 is an apocalyptic number.

It is an amenable number.

40256605 is a deficient number, since it is larger than the sum of its proper divisors (8091395).

40256605 is a wasteful number, since it uses less digits than its factorization.

40256605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6683.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 40256605 is about 6344.8092957945. The cubic root of 40256605 is about 342.7249450245.

The spelling of 40256605 in words is "forty million, two hundred fifty-six thousand, six hundred five".