40402340425 has 6 divisors (see below), whose sum is σ = 50098902158. Its totient is φ = 32321872320.

The previous prime is 40402340413. The next prime is 40402340443. The reversal of 40402340425 is 52404320404.

It can be written as a sum of positive squares in 3 ways, for example, as 29073664 + 40373266761 = 5392^2 + 200931^2 .

It is not a de Polignac number, because 40402340425 - 2¹¹ = 40402338377 is a prime.

It is a super-2 number, since 2×40402340425² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40402340393 and 40402340402.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 808046784 + ... + 808046833.

Almost surely, 2^40402340425 is an apocalyptic number.

It is an amenable number.

40402340425 is a deficient number, since it is larger than the sum of its proper divisors (9696561733).

40402340425 is a wasteful number, since it uses less digits than its factorization.

40402340425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616093627 (or 1616093622 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

Adding to 40402340425 its reverse (52404320404), we get a palindrome (92806660829).

The spelling of 40402340425 in words is "forty billion, four hundred two million, three hundred forty thousand, four hundred twenty-five".