1131525 has 36 divisors (see below), whose sum is σ = 2089152. Its totient is φ = 585120.

The previous prime is 1131523. The next prime is 1131547. The reversal of 1131525 is 5251311.

It is not a de Polignac number, because 1131525 - 2¹ = 1131523 is a prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1131498 and 1131507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131523) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10522 + ... + 10628.

It is an arithmetic number, because the mean of its divisors is an integer number (58032).

2^1131525 is an apocalyptic number.

1131525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131525 is a deficient number, since it is larger than the sum of its proper divisors (957627).

1131525 is a wasteful number, since it uses less digits than its factorization.

1131525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 162 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 1131525 is about 1063.7316390895. The cubic root of 1131525 is about 104.2048784254.

Adding to 1131525 its reverse (5251311), we get a palindrome (6382836).

The spelling of 1131525 in words is "one million, one hundred thirty-one thousand, five hundred twenty-five".