40250005 has 4 divisors (see below), whose sum is σ = 48300012. Its totient is φ = 32200000.

The previous prime is 40249981. The next prime is 40250011. The reversal of 40250005 is 50005204.

It is a happy number.

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 4704561 + 35545444 = 2169^2 + 5962^2 .

It is not a de Polignac number, because 40250005 - 2⁵ = 40249973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4024996 + ... + 4025005.

It is an arithmetic number, because the mean of its divisors is an integer number (12075003).

Almost surely, 2^40250005 is an apocalyptic number.

It is an amenable number.

40250005 is a deficient number, since it is larger than the sum of its proper divisors (8050007).

40250005 is an equidigital number, since it uses as much as digits as its factorization.

40250005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050006.

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

The square root of 40250005 is about 6344.2891642800. The cubic root of 40250005 is about 342.7062142824.

Adding to 40250005 its reverse (50005204), we get a palindrome (90255209).

The spelling of 40250005 in words is "forty million, two hundred fifty thousand, five".