1121825 has 12 divisors (see below), whose sum is σ = 1452288. Its totient is φ = 858000.

The previous prime is 1121819. The next prime is 1121831. The reversal of 1121825 is 5281211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1121819) and next prime (1121831).

It is not a de Polignac number, because 1121825 - 2¹² = 1117729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121797 and 1121806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (121024).

2^1121825 is an apocalyptic number.

It is an amenable number.

1121825 is a deficient number, since it is larger than the sum of its proper divisors (330463).

1121825 is a wasteful number, since it uses less digits than its factorization.

1121825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984 (or 1979 counting only the distinct ones).

The product of its digits is 160, while the sum is 20.

The square root of 1121825 is about 1059.1624049219. The cubic root of 1121825 is about 103.9062579852.

The spelling of 1121825 in words is "one million, one hundred twenty-one thousand, eight hundred twenty-five".