1109025 has 48 divisors (see below), whose sum is σ = 2142720. Its totient is φ = 561600.

The previous prime is 1109021. The next prime is 1109033. The reversal of 1109025 is 5209011.

It is not a de Polignac number, because 1109025 - 2² = 1109021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1108989 and 1109007.

It is not an unprimeable number, because it can be changed into a prime (1109021) 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, 20899 + ... + 20951.

It is an arithmetic number, because the mean of its divisors is an integer number (44640).

2^1109025 is an apocalyptic number.

1109025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1109025 is a deficient number, since it is larger than the sum of its proper divisors (1033695).

1109025 is a wasteful number, since it uses less digits than its factorization.

1109025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1109025 is about 1053.1025591081. The cubic root of 1109025 is about 103.5095559335.

The spelling of 1109025 in words is "one million, one hundred nine thousand, twenty-five".