2821402825 has 12 divisors (see below), whose sum is σ = 3513561948. Its totient is φ = 2247430400.

The previous prime is 2821402813. The next prime is 2821402861. The reversal of 2821402825 is 5282041282.

It can be written as a sum of positive squares in 6 ways, for example, as 480004281 + 2341398544 = 21909^2 + 48388^2 .

It is not a de Polignac number, because 2821402825 - 2¹⁹ = 2820878537 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 236356 + ... + 248005.

It is an arithmetic number, because the mean of its divisors is an integer number (292796829).

Almost surely, 2^2821402825 is an apocalyptic number.

2821402825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2821402825 is a deficient number, since it is larger than the sum of its proper divisors (692159123).

2821402825 is a wasteful number, since it uses less digits than its factorization.

2821402825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484604 (or 484599 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 2821402825 is about 53116.8789086859. The cubic root of 2821402825 is about 1413.0418752648.

The spelling of 2821402825 in words is "two billion, eight hundred twenty-one million, four hundred two thousand, eight hundred twenty-five".