1143825 has 24 divisors (see below), whose sum is σ = 1922496. Its totient is φ = 600000.

The previous prime is 1143817. The next prime is 1143829. The reversal of 1143825 is 5283411.

It is not a de Polignac number, because 1143825 - 2³ = 1143817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143795 and 1143804.

It is not an unprimeable number, because it can be changed into a prime (1143829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7500 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (80104).

2^1143825 is an apocalyptic number.

1143825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143825 is a deficient number, since it is larger than the sum of its proper divisors (778671).

1143825 is a wasteful number, since it uses less digits than its factorization.

1143825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 260 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 1143825 is about 1069.4975455792. The cubic root of 1143825 is about 104.5810974304.

The spelling of 1143825 in words is "one million, one hundred forty-three thousand, eight hundred twenty-five".