1125044500 has 24 divisors (see below), whose sum is σ = 2457098280. Its totient is φ = 450017600.

The previous prime is 1125044489. The next prime is 1125044519. The reversal of 1125044500 is 54405211.

It can be written as a sum of positive squares in 4 ways, for example, as 6543364 + 1118501136 = 2558^2 + 33444^2 .

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, 1124545 + ... + 1125544.

It is an arithmetic number, because the mean of its divisors is an integer number (102379095).

Almost surely, 2^1125044500 is an apocalyptic number.

1125044500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125044500 is an abundant number, since it is smaller than the sum of its proper divisors (1332053780).

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

1125044500 is a wasteful number, since it uses less digits than its factorization.

1125044500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2250108 (or 2250096 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1125044500 is about 33541.6830227703. The cubic root of 1125044500 is about 1040.0556244903.

Adding to 1125044500 its reverse (54405211), we get a palindrome (1179449711).

The spelling of 1125044500 in words is "one billion, one hundred twenty-five million, forty-four thousand, five hundred".