4025522500 has 60 divisors (see below), whose sum is σ = 8927392320. Its totient is φ = 1587460000.

The previous prime is 4025522489. The next prime is 4025522513. The reversal of 4025522500 is 52255204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 166161 + ... + 188839.

It is an arithmetic number, because the mean of its divisors is an integer number (148789872).

Almost surely, 2^4025522500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4025522500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4463696160).

4025522500 is an abundant number, since it is smaller than the sum of its proper divisors (4901869820).

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

4025522500 is a wasteful number, since it uses less digits than its factorization.

4025522500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22774 (or 22757 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 4025522500 is about 63447.0054454897. The cubic root of 4025522500 is about 1590.7701001641.

Adding to 4025522500 its reverse (52255204), we get a palindrome (4077777704).

The spelling of 4025522500 in words is "four billion, twenty-five million, five hundred twenty-two thousand, five hundred".