1131825 has 12 divisors (see below), whose sum is σ = 1871408. Its totient is φ = 603600.

The previous prime is 1131821. The next prime is 1131827. The reversal of 1131825 is 5281311.

It is not a de Polignac number, because 1131825 - 2² = 1131821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7471 + ... + 7620.

2^1131825 is an apocalyptic number.

1131825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131825 is a deficient number, since it is larger than the sum of its proper divisors (739583).

1131825 is a wasteful number, since it uses less digits than its factorization.

1131825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15104 (or 15099 counting only the distinct ones).

The product of its digits is 240, while the sum is 21.

The square root of 1131825 is about 1063.8726427538. The cubic root of 1131825 is about 104.2140868539.

The spelling of 1131825 in words is "one million, one hundred thirty-one thousand, eight hundred twenty-five".