40025520 has 120 divisors (see below), whose sum is σ = 140321376. Its totient is φ = 10205184.

The previous prime is 40025519. The next prime is 40025551. The reversal of 40025520 is 2552004.

40025520 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 (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40025493 and 40025502.

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 23 ways as a sum of consecutive naturals, for example, 15352 + ... + 17768.

Almost surely, 2^40025520 is an apocalyptic number.

40025520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40025520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70160688).

40025520 is an abundant number, since it is smaller than the sum of its proper divisors (100295856).

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

40025520 is a wasteful number, since it uses less digits than its factorization.

40025520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459 (or 2450 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 40025520 is about 6326.5725317900. The cubic root of 40025520 is about 342.0679048503.

Adding to 40025520 its reverse (2552004), we get a palindrome (42577524).

The spelling of 40025520 in words is "forty million, twenty-five thousand, five hundred twenty".