1121525 has 12 divisors (see below), whose sum is σ = 1406532. Its totient is φ = 887040.

The previous prime is 1121509. The next prime is 1121539. The reversal of 1121525 is 5251211.

It can be written as a sum of positive squares in 6 ways, for example, as 155236 + 966289 = 394^2 + 983^2 .

It is not a de Polignac number, because 1121525 - 2⁴ = 1121509 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2627 + ... + 3023.

It is an arithmetic number, because the mean of its divisors is an integer number (117211).

2^1121525 is an apocalyptic number.

It is an amenable number.

1121525 is a deficient number, since it is larger than the sum of its proper divisors (285007).

1121525 is a wasteful number, since it uses less digits than its factorization.

1121525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 515 counting only the distinct ones).

The product of its digits is 100, while the sum is 17.

The square root of 1121525 is about 1059.0207741116. The cubic root of 1121525 is about 103.8969949075.

Adding to 1121525 its reverse (5251211), we get a palindrome (6372736).

The spelling of 1121525 in words is "one million, one hundred twenty-one thousand, five hundred twenty-five".