1125002200 has 96 divisors (see below), whose sum is σ = 3165199200. Its totient is φ = 363018240.

The previous prime is 1125002143. The next prime is 1125002201. The reversal of 1125002200 is 22005211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125002201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166 + ... + 47434.

It is an arithmetic number, because the mean of its divisors is an integer number (32970825).

Almost surely, 2^1125002200 is an apocalyptic number.

1125002200 is a gapful number since it is divisible by the number (10) 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 1125002200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1582599600).

1125002200 is an abundant number, since it is smaller than the sum of its proper divisors (2040197000).

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

1125002200 is a wasteful number, since it uses less digits than its factorization.

1125002200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47309 (or 47300 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1125002200 is about 33541.0524581445. The cubic root of 1125002200 is about 1040.0425894788.

Adding to 1125002200 its reverse (22005211), we get a palindrome (1147007411).

The spelling of 1125002200 in words is "one billion, one hundred twenty-five million, two thousand, two hundred".