40205255 has 16 divisors (see below), whose sum is σ = 51956640. Its totient is φ = 29755392.

The previous prime is 40205251. The next prime is 40205267. The reversal of 40205255 is 55250204.

It is a cyclic number.

It is not a de Polignac number, because 40205255 - 2² = 40205251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40205255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40205251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1007 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (3247290).

Almost surely, 2^40205255 is an apocalyptic number.

40205255 is a deficient number, since it is larger than the sum of its proper divisors (11751385).

40205255 is a wasteful number, since it uses less digits than its factorization.

40205255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 40205255 is about 6340.7613896124. The cubic root of 40205255 is about 342.5791601353.

Adding to 40205255 its reverse (55250204), we get a palindrome (95455459).

The spelling of 40205255 in words is "forty million, two hundred five thousand, two hundred fifty-five".