40025040 has 80 divisors (see below), whose sum is σ = 135366336. Its totient is φ = 9702400.

The previous prime is 40025033. The next prime is 40025071. The reversal of 40025040 is 4052004.

40025040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 4941 + ... + 10220.

Almost surely, 2^40025040 is an apocalyptic number.

40025040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40025040 is an abundant number, since it is smaller than the sum of its proper divisors (95341296).

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

40025040 is a wasteful number, since it uses less digits than its factorization.

40025040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15188 (or 15182 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 40025040 is about 6326.5345964438. The cubic root of 40025040 is about 342.0665374456.

Adding to 40025040 its reverse (4052004), we get a palindrome (44077044).

The spelling of 40025040 in words is "forty million, twenty-five thousand, forty".