2291825 has 6 divisors (see below), whose sum is σ = 2841894. Its totient is φ = 1833440.

The previous prime is 2291803. The next prime is 2291827. The reversal of 2291825 is 5281922.

2291825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 80656 + 2211169 = 284^2 + 1487^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2291825 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291827) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 45812 + ... + 45861.

It is an arithmetic number, because the mean of its divisors is an integer number (473649).

2^2291825 is an apocalyptic number.

2291825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2291825 is a deficient number, since it is larger than the sum of its proper divisors (550069).

2291825 is an equidigital number, since it uses as much as digits as its factorization.

2291825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91683 (or 91678 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2291825 is about 1513.8774719243. The cubic root of 2291825 is about 131.8440344926.

The spelling of 2291825 in words is "two million, two hundred ninety-one thousand, eight hundred twenty-five".