2225500128 has 72 divisors (see below), whose sum is σ = 6345775800. Its totient is φ = 739839744.

The previous prime is 2225500127. The next prime is 2225500129. The reversal of 2225500128 is 8210055222.

It is an interprime number because it is at equal distance from previous prime (2225500127) and next prime (2225500129).

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-3 number, since 3×2225500128³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225500127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98958 + ... + 119346.

It is an arithmetic number, because the mean of its divisors is an integer number (88135775).

Almost surely, 2^2225500128 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 2225500128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3172887900).

2225500128 is an abundant number, since it is smaller than the sum of its proper divisors (4120275672).

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

2225500128 is a wasteful number, since it uses less digits than its factorization.

2225500128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20784 (or 20773 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 2225500128 is about 47175.2067086091. The cubic root of 2225500128 is about 1305.5971935313.

The spelling of 2225500128 in words is "two billion, two hundred twenty-five million, five hundred thousand, one hundred twenty-eight".