40825599394 has 4 divisors (see below), whose sum is σ = 61238399094. Its totient is φ = 20412799696.

The previous prime is 40825599391. The next prime is 40825599431. The reversal of 40825599394 is 49399552804.

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

It can be written as a sum of positive squares in only one way, i.e., 32801918769 + 8023680625 = 181113^2 + 89575^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (40825599391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206399847 + ... + 10206399850.

Almost surely, 2^40825599394 is an apocalyptic number.

40825599394 is a deficient number, since it is larger than the sum of its proper divisors (20412799700).

40825599394 is a wasteful number, since it uses less digits than its factorization.

40825599394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20412799699.

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 40825599394 in words is "forty billion, eight hundred twenty-five million, five hundred ninety-nine thousand, three hundred ninety-four".