1125089280 has 384 divisors, whose sum is σ = 4498322400. Its totient is φ = 254803968.

The previous prime is 1125089267. The next prime is 1125089299. The reversal of 1125089280 is 829805211.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

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, 10321866 + ... + 10321974.

Almost surely, 2^1125089280 is an apocalyptic number.

1125089280 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 1125089280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2249161200).

1125089280 is an abundant number, since it is smaller than the sum of its proper divisors (3373233120).

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

1125089280 is an equidigital number, since it uses as much as digits as its factorization.

1125089280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 126 counting only the distinct ones).

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

The square root of 1125089280 is about 33542.3505437529. The cubic root of 1125089280 is about 1040.0694233736.

The spelling of 1125089280 in words is "one billion, one hundred twenty-five million, eighty-nine thousand, two hundred eighty".