40105265 has 4 divisors (see below), whose sum is σ = 48126324. Its totient is φ = 32084208.

The previous prime is 40105229. The next prime is 40105267. The reversal of 40105265 is 56250104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24049216 + 16056049 = 4904^2 + 4007^2 .

It is a cyclic number.

It is not a de Polignac number, because 40105265 - 2¹² = 40101169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40105265.

It is not an unprimeable number, because it can be changed into a prime (40105267) 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, 4010522 + ... + 4010531.

It is an arithmetic number, because the mean of its divisors is an integer number (12031581).

Almost surely, 2^40105265 is an apocalyptic number.

It is an amenable number.

40105265 is a deficient number, since it is larger than the sum of its proper divisors (8021059).

40105265 is an equidigital number, since it uses as much as digits as its factorization.

40105265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8021058.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40105265 is about 6332.8717814274. The cubic root of 40105265 is about 342.2949275861.

Adding to 40105265 its reverse (56250104), we get a palindrome (96355369).

The spelling of 40105265 in words is "forty million, one hundred five thousand, two hundred sixty-five".