1125289800 has 96 divisors (see below), whose sum is σ = 3876016800. Its totient is φ = 300075840.

The previous prime is 1125289793. The next prime is 1125289811. The reversal of 1125289800 is 89825211.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98794 + ... + 109593.

It is an arithmetic number, because the mean of its divisors is an integer number (40375175).

Almost surely, 2^1125289800 is an apocalyptic number.

1125289800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125289800 is an abundant number, since it is smaller than the sum of its proper divisors (2750727000).

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

1125289800 is a wasteful number, since it uses less digits than its factorization.

1125289800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208412 (or 208397 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1125289800 is about 33545.3394676518. The cubic root of 1125289800 is about 1040.1312087909.

The spelling of 1125289800 in words is "one billion, one hundred twenty-five million, two hundred eighty-nine thousand, eight hundred".