40043320125 has 32 divisors (see below), whose sum is σ = 66654232320. Its totient is φ = 21349339200.

The previous prime is 40043320117. The next prime is 40043320127. The reversal of 40043320125 is 52102334004.

It is not a de Polignac number, because 40043320125 - 2³ = 40043320117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40043320095 and 40043320104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40043320127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1228539 + ... + 1260711.

It is an arithmetic number, because the mean of its divisors is an integer number (2082944760).

Almost surely, 2^40043320125 is an apocalyptic number.

It is an amenable number.

40043320125 is a deficient number, since it is larger than the sum of its proper divisors (26610912195).

40043320125 is a wasteful number, since it uses less digits than its factorization.

40043320125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35510 (or 35500 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 40043320125 its reverse (52102334004), we get a palindrome (92145654129).

The spelling of 40043320125 in words is "forty billion, forty-three million, three hundred twenty thousand, one hundred twenty-five".