2820425 has 12 divisors (see below), whose sum is σ = 3535116. Its totient is φ = 2232000.

The previous prime is 2820407. The next prime is 2820479. The reversal of 2820425 is 5240282.

It can be written as a sum of positive squares in 6 ways, for example, as 51529 + 2768896 = 227^2 + 1664^2 .

It is not a de Polignac number, because 2820425 - 2⁶ = 2820361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2820425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1967 + ... + 3083.

It is an arithmetic number, because the mean of its divisors is an integer number (294593).

2^2820425 is an apocalyptic number.

2820425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2820425 is a deficient number, since it is larger than the sum of its proper divisors (714691).

2820425 is a wasteful number, since it uses less digits than its factorization.

2820425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2820425 is about 1679.4120995158. The cubic root of 2820425 is about 141.2878615188.

The spelling of 2820425 in words is "two million, eight hundred twenty thousand, four hundred twenty-five".