1089025000 has 192 divisors, whose sum is σ = 2999808000. Its totient is φ = 370440000.

The previous prime is 1089024997. The next prime is 1089025001. The reversal of 1089025000 is 5209801.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089025001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8574937 + ... + 8575063.

It is an arithmetic number, because the mean of its divisors is an integer number (15624000).

Almost surely, 2^1089025000 is an apocalyptic number.

1089025000 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 1089025000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499904000).

1089025000 is an abundant number, since it is smaller than the sum of its proper divisors (1910783000).

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

1089025000 is an frugal number, since it uses more digits than its factorization.

1089025000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1089025000 is about 33000.3787857049. The cubic root of 1089025000 is about 1028.8355206276.

It can be divided in two parts, 10890 and 25000, that multiplied together give a square (272250000 = 16500²).

The spelling of 1089025000 in words is "one billion, eighty-nine million, twenty-five thousand".