1125579000 has 768 divisors, whose sum is σ = 4780339200. Its totient is φ = 217728000.

The previous prime is 1125578999. The next prime is 1125579011. The reversal of 1125579000 is 9755211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 36308985 + ... + 36309015.

It is an arithmetic number, because the mean of its divisors is an integer number (6224400).

Almost surely, 2^1125579000 is an apocalyptic number.

1125579000 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 1125579000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390169600).

1125579000 is an abundant number, since it is smaller than the sum of its proper divisors (3654760200).

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

1125579000 is a wasteful number, since it uses less digits than its factorization.

1125579000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 1125579000 is about 33549.6497746251. The cubic root of 1125579000 is about 1040.2203058928.

The spelling of 1125579000 in words is "one billion, one hundred twenty-five million, five hundred seventy-nine thousand".