40025511440 has 20 divisors (see below), whose sum is σ = 93059314284. Its totient is φ = 16010204544.

The previous prime is 40025511347. The next prime is 40025511457. The reversal of 40025511440 is 4411552004.

It can be written as a sum of positive squares in 2 ways, for example, as 7975918864 + 32049592576 = 89308^2 + 179024^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 250159367 + ... + 250159526.

Almost surely, 2^40025511440 is an apocalyptic number.

40025511440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40025511440 is an abundant number, since it is smaller than the sum of its proper divisors (53033802844).

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

40025511440 is a wasteful number, since it uses less digits than its factorization.

40025511440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500318906 (or 500318900 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The spelling of 40025511440 in words is "forty billion, twenty-five million, five hundred eleven thousand, four hundred forty".