40000265 has 4 divisors (see below), whose sum is σ = 48000324. Its totient is φ = 32000208.

The previous prime is 40000253. The next prime is 40000271. The reversal of 40000265 is 56200004.

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 18913801 + 21086464 = 4349^2 + 4592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40000265 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4000022 + ... + 4000031.

It is an arithmetic number, because the mean of its divisors is an integer number (12000081).

Almost surely, 2^40000265 is an apocalyptic number.

It is an amenable number.

40000265 is a deficient number, since it is larger than the sum of its proper divisors (8000059).

40000265 is an equidigital number, since it uses as much as digits as its factorization.

40000265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000058.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40000265 is about 6324.5762703916. The cubic root of 40000265 is about 341.9959445730.

Adding to 40000265 its reverse (56200004), we get a palindrome (96200269).

The spelling of 40000265 in words is "forty million, two hundred sixty-five", and thus it is an aban number.