2825645 has 8 divisors (see below), whose sum is σ = 3400056. Its totient is φ = 2254336.

The previous prime is 2825639. The next prime is 2825651. The reversal of 2825645 is 5465282.

It is an interprime number because it is at equal distance from previous prime (2825639) and next prime (2825651).

It can be written as a sum of positive squares in 4 ways, for example, as 310249 + 2515396 = 557^2 + 1586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2825645 - 2¹⁰ = 2824621 is a prime.

It is a super-3 number, since 3×2825645³ = 67682134981365633375, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2489 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (425007).

2^2825645 is an apocalyptic number.

It is an amenable number.

2825645 is a deficient number, since it is larger than the sum of its proper divisors (574411).

2825645 is an equidigital number, since it uses as much as digits as its factorization.

2825645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551.

The product of its digits is 19200, while the sum is 32.

The square root of 2825645 is about 1680.9654963740. The cubic root of 2825645 is about 141.3749722800.

The spelling of 2825645 in words is "two million, eight hundred twenty-five thousand, six hundred forty-five".