40000255 has 4 divisors (see below), whose sum is σ = 48000312. Its totient is φ = 32000200.

The previous prime is 40000253. The next prime is 40000271. The reversal of 40000255 is 55200004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40000255 - 2¹ = 40000253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4000021 + ... + 4000030.

It is an arithmetic number, because the mean of its divisors is an integer number (12000078).

Almost surely, 2^40000255 is an apocalyptic number.

40000255 is a deficient number, since it is larger than the sum of its proper divisors (8000057).

40000255 is an equidigital number, since it uses as much as digits as its factorization.

40000255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000056.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 40000255 is about 6324.5754798247. The cubic root of 40000255 is about 341.9959160736.

Adding to 40000255 its reverse (55200004), we get a palindrome (95200259).

The spelling of 40000255 in words is "forty million, two hundred fifty-five", and thus it is an aban number.