40501256500 has 24 divisors (see below), whose sum is σ = 88454745288. Its totient is φ = 16200502400.

The previous prime is 40501256483. The next prime is 40501256533. The reversal of 40501256500 is 565210504.

It can be written as a sum of positive squares in 4 ways, for example, as 3929283856 + 36571972644 = 62684^2 + 191238^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40500757 + ... + 40501756.

It is an arithmetic number, because the mean of its divisors is an integer number (3685614387).

Almost surely, 2^40501256500 is an apocalyptic number.

It is an amenable number.

40501256500 is an abundant number, since it is smaller than the sum of its proper divisors (47953488788).

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

40501256500 is a wasteful number, since it uses less digits than its factorization.

40501256500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81002532 (or 81002520 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 40501256500 in words is "forty billion, five hundred one million, two hundred fifty-six thousand, five hundred".