2225081500 has 24 divisors (see below), whose sum is σ = 4859579088. Its totient is φ = 890032400.

The previous prime is 2225081449. The next prime is 2225081561. The reversal of 2225081500 is 51805222.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2224582 + ... + 2225581.

It is an arithmetic number, because the mean of its divisors is an integer number (202482462).

Almost surely, 2^2225081500 is an apocalyptic number.

2225081500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2225081500 is an abundant number, since it is smaller than the sum of its proper divisors (2634497588).

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

2225081500 is a wasteful number, since it uses less digits than its factorization.

2225081500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450182 (or 4450170 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2225081500 is about 47170.7695506444. The cubic root of 2225081500 is about 1305.5153252194.

Adding to 2225081500 its reverse (51805222), we get a palindrome (2276886722).

The spelling of 2225081500 in words is "two billion, two hundred twenty-five million, eighty-one thousand, five hundred".