1121025 has 12 divisors (see below), whose sum is σ = 1853552. Its totient is φ = 597840.

The previous prime is 1121023. The next prime is 1121027. The reversal of 1121025 is 5201211.

It is an interprime number because it is at equal distance from previous prime (1121023) and next prime (1121027).

It is not a de Polignac number, because 1121025 - 2¹ = 1121023 is a prime.

It is a Duffinian number.

1121025 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121025.

It is not an unprimeable number, because it can be changed into a prime (1121023) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7399 + ... + 7548.

2^1121025 is an apocalyptic number.

1121025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121025 is a deficient number, since it is larger than the sum of its proper divisors (732527).

1121025 is a wasteful number, since it uses less digits than its factorization.

1121025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14960 (or 14955 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1121025 is about 1058.7846806599. The cubic root of 1121025 is about 103.8815527731.

Adding to 1121025 its reverse (5201211), we get a palindrome (6322236).

The spelling of 1121025 in words is "one million, one hundred twenty-one thousand, twenty-five".