1109025000 has 384 divisors, whose sum is σ = 4049740800. Its totient is φ = 280800000.

The previous prime is 1109024993. The next prime is 1109025007. The reversal of 1109025000 is 5209011.

It is an interprime number because it is at equal distance from previous prime (1109024993) and next prime (1109025007).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1109025007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20924974 + ... + 20925026.

It is an arithmetic number, because the mean of its divisors is an integer number (10546200).

Almost surely, 2^1109025000 is an apocalyptic number.

1109025000 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 1109025000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2024870400).

1109025000 is an abundant number, since it is smaller than the sum of its proper divisors (2940715800).

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

1109025000 is an equidigital number, since it uses as much as digits as its factorization.

1109025000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1109025000 is about 33302.0269653365. The cubic root of 1109025000 is about 1035.0955593349.

The spelling of 1109025000 in words is "one billion, one hundred nine million, twenty-five thousand".