7025821 has 8 divisors (see below), whose sum is σ = 7779744. Its totient is φ = 6291120.

The previous prime is 7025791. The next prime is 7025827. The reversal of 7025821 is 1285207.

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

It is not a de Polignac number, because 7025821 - 2¹⁹ = 6501533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7025827) by changing a digit.

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, 4030 + ... + 5503.

It is an arithmetic number, because the mean of its divisors is an integer number (972468).

Almost surely, 2^7025821 is an apocalyptic number.

It is an amenable number.

7025821 is a deficient number, since it is larger than the sum of its proper divisors (753923).

7025821 is a wasteful number, since it uses less digits than its factorization.

7025821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9611.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7025821 is about 2650.6265297095. The cubic root of 7025821 is about 191.5280382155.

The spelling of 7025821 in words is "seven million, twenty-five thousand, eight hundred twenty-one".