1145825 has 6 divisors (see below), whose sum is σ = 1420854. Its totient is φ = 916640.

The previous prime is 1145803. The next prime is 1145831. The reversal of 1145825 is 5285411.

It can be written as a sum of positive squares in 3 ways, for example, as 113569 + 1032256 = 337^2 + 1016^2 .

It is not a de Polignac number, because 1145825 - 2¹⁴ = 1129441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145794 and 1145803.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22892 + ... + 22941.

It is an arithmetic number, because the mean of its divisors is an integer number (236809).

2^1145825 is an apocalyptic number.

It is an amenable number.

1145825 is a deficient number, since it is larger than the sum of its proper divisors (275029).

1145825 is an equidigital number, since it uses as much as digits as its factorization.

1145825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45843 (or 45838 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The square root of 1145825 is about 1070.4321557203. The cubic root of 1145825 is about 104.6420159581.

It can be divided in two parts, 1145 and 825, that multiplied together give a triangular number (944625 = T₁₃₇₄).

The spelling of 1145825 in words is "one million, one hundred forty-five thousand, eight hundred twenty-five".