40641344025 has 12 divisors (see below), whose sum is σ = 67193688912. Its totient is φ = 21675383440.

The previous prime is 40641344021. The next prime is 40641344099. The reversal of 40641344025 is 52044314604.

It is a happy number.

40641344025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40641344025 - 2² = 40641344021 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40641344021) 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, 270942219 + ... + 270942368.

It is an arithmetic number, because the mean of its divisors is an integer number (5599474076).

Almost surely, 2^40641344025 is an apocalyptic number.

It is an amenable number.

40641344025 is a deficient number, since it is larger than the sum of its proper divisors (26552344887).

40641344025 is a wasteful number, since it uses less digits than its factorization.

40641344025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541884600 (or 541884595 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 40641344025 its reverse (52044314604), we get a palindrome (92685658629).

The spelling of 40641344025 in words is "forty billion, six hundred forty-one million, three hundred forty-four thousand, twenty-five".