40443404425 has 12 divisors (see below), whose sum is σ = 50155071120. Its totient is φ = 32351336720.

The previous prime is 40443404423. The next prime is 40443404467. The reversal of 40443404425 is 52440434404.

It is not a de Polignac number, because 40443404425 - 2¹ = 40443404423 is a prime.

It is a super-2 number, since 2×40443404425² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40443404423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174486 + ... + 333664.

It is an arithmetic number, because the mean of its divisors is an integer number (4179589260).

Almost surely, 2^40443404425 is an apocalyptic number.

It is an amenable number.

40443404425 is a deficient number, since it is larger than the sum of its proper divisors (9711666695).

40443404425 is a wasteful number, since it uses less digits than its factorization.

40443404425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169352 (or 169347 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 34.

Adding to 40443404425 its reverse (52440434404), we get a palindrome (92883838829).

The spelling of 40443404425 in words is "forty billion, four hundred forty-three million, four hundred four thousand, four hundred twenty-five".