40525405656 has 16 divisors (see below), whose sum is σ = 101313514200. Its totient is φ = 13508468544.

The previous prime is 40525405603. The next prime is 40525405699. The reversal of 40525405656 is 65650452504.

It is a happy number.

40525405656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844279261 + ... + 844279308.

Almost surely, 2^40525405656 is an apocalyptic number.

It is an amenable number.

40525405656 is an abundant number, since it is smaller than the sum of its proper divisors (60788108544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40525405656 is a wasteful number, since it uses less digits than its factorization.

40525405656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688558578 (or 1688558574 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 40525405656 in words is "forty billion, five hundred twenty-five million, four hundred five thousand, six hundred fifty-six".