1089925 has 6 divisors (see below), whose sum is σ = 1351538. Its totient is φ = 871920.

The previous prime is 1089919. The next prime is 1089941. The reversal of 1089925 is 5299801.

It can be written as a sum of positive squares in 3 ways, for example, as 10404 + 1079521 = 102^2 + 1039^2 .

It is not a de Polignac number, because 1089925 - 2³ = 1089917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21774 + ... + 21823.

2^1089925 is an apocalyptic number.

It is an amenable number.

1089925 is a deficient number, since it is larger than the sum of its proper divisors (261613).

1089925 is an equidigital number, since it uses as much as digits as its factorization.

1089925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43607 (or 43602 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1089925 is about 1043.9947317875. The cubic root of 1089925 is about 102.9118861845.

The spelling of 1089925 in words is "one million, eighty-nine thousand, nine hundred twenty-five".