2215725 has 24 divisors (see below), whose sum is σ = 3785472. Its totient is φ = 1142400.

The previous prime is 2215699. The next prime is 2215777. The reversal of 2215725 is 5275122.

It is not a de Polignac number, because 2215725 - 2⁵ = 2215693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2215695 and 2215704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1849 + ... + 2801.

It is an arithmetic number, because the mean of its divisors is an integer number (157728).

2^2215725 is an apocalyptic number.

2215725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2215725 is a deficient number, since it is larger than the sum of its proper divisors (1569747).

2215725 is a wasteful number, since it uses less digits than its factorization.

2215725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 992 counting only the distinct ones).

The product of its digits is 1400, while the sum is 24.

The square root of 2215725 is about 1488.5311551996. The cubic root of 2215725 is about 130.3682850657.

The spelling of 2215725 in words is "two million, two hundred fifteen thousand, seven hundred twenty-five".