1089825 has 24 divisors (see below), whose sum is σ = 1967136. Its totient is φ = 528000.

The previous prime is 1089799. The next prime is 1089841. The reversal of 1089825 is 5289801.

It is a happy number.

It is not a de Polignac number, because 1089825 - 2⁵ = 1089793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon 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, 165 + ... + 1485.

It is an arithmetic number, because the mean of its divisors is an integer number (81964).

2^1089825 is an apocalyptic number.

1089825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1089825 is a deficient number, since it is larger than the sum of its proper divisors (877311).

1089825 is a wasteful number, since it uses less digits than its factorization.

1089825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1340 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1089825 is about 1043.9468377269. The cubic root of 1089825 is about 102.9087387192.

The spelling of 1089825 in words is "one million, eighty-nine thousand, eight hundred twenty-five".