40255405 has 32 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 28419072.

The previous prime is 40255379. The next prime is 40255417. The reversal of 40255405 is 50455204.

It is a cyclic number.

It is not a de Polignac number, because 40255405 - 2¹³ = 40247213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40255405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115171 + ... + 115519.

It is an arithmetic number, because the mean of its divisors is an integer number (1701000).

Almost surely, 2^40255405 is an apocalyptic number.

It is an amenable number.

40255405 is a deficient number, since it is larger than the sum of its proper divisors (14176595).

40255405 is a wasteful number, since it uses less digits than its factorization.

40255405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 40255405 is about 6344.7147295997. The cubic root of 40255405 is about 342.7215395873.

The spelling of 40255405 in words is "forty million, two hundred fifty-five thousand, four hundred five".