2221025 has 12 divisors (see below), whose sum is σ = 2794092. Its totient is φ = 1751040.

The previous prime is 2221019. The next prime is 2221031. The reversal of 2221025 is 5201222.

2221025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2221019) and next prime (2221031).

It can be written as a sum of positive squares in 6 ways, for example, as 80656 + 2140369 = 284^2 + 1463^2 .

It is not a de Polignac number, because 2221025 - 2⁶ = 2220961 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1217 + ... + 2433.

It is an arithmetic number, because the mean of its divisors is an integer number (232841).

2^2221025 is an apocalyptic number.

2221025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2221025 is the 1217-th pentagonal number.

It is an amenable number.

2221025 is a deficient number, since it is larger than the sum of its proper divisors (573067).

2221025 is a wasteful number, since it uses less digits than its factorization.

2221025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2221025 is about 1490.3103703591. The cubic root of 2221025 is about 130.4721489965.

Adding to 2221025 its reverse (5201222), we get a palindrome (7422247).

The spelling of 2221025 in words is "two million, two hundred twenty-one thousand, twenty-five".