1089425 has 6 divisors (see below), whose sum is σ = 1350918. Its totient is φ = 871520.

The previous prime is 1089421. The next prime is 1089427. The reversal of 1089425 is 5249801.

It can be written as a sum of positive squares in 3 ways, for example, as 16129 + 1073296 = 127^2 + 1036^2 .

It is not a de Polignac number, because 1089425 - 2² = 1089421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21764 + ... + 21813.

It is an arithmetic number, because the mean of its divisors is an integer number (225153).

2^1089425 is an apocalyptic number.

It is an amenable number.

1089425 is a deficient number, since it is larger than the sum of its proper divisors (261493).

1089425 is an equidigital number, since it uses as much as digits as its factorization.

1089425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43587 (or 43582 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1089425 is about 1043.7552395078. The cubic root of 1089425 is about 102.8961469323.

The spelling of 1089425 in words is "one million, eighty-nine thousand, four hundred twenty-five".