2215625 has 12 divisors (see below), whose sum is σ = 2773260. Its totient is φ = 1770000.

The previous prime is 2215583. The next prime is 2215639. The reversal of 2215625 is 5265122.

2215625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2105401 + 110224 = 1451^2 + 332^2 .

It is not a de Polignac number, because 2215625 - 2⁶ = 2215561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2215625.

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, 2771 + ... + 3479.

It is an arithmetic number, because the mean of its divisors is an integer number (231105).

2^2215625 is an apocalyptic number.

2215625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2215625 is a deficient number, since it is larger than the sum of its proper divisors (557635).

2215625 is an frugal number, since it uses more digits than its factorization.

2215625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 714 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 2215625 is about 1488.4975646604. The cubic root of 2215625 is about 130.3663237777.

The spelling of 2215625 in words is "two million, two hundred fifteen thousand, six hundred twenty-five".