215000725 has 6 divisors (see below), whose sum is σ = 266600930. Its totient is φ = 172000560.

The previous prime is 215000699. The next prime is 215000741. The reversal of 215000725 is 527000512.

It can be written as a sum of positive squares in 3 ways, for example, as 68856804 + 146143921 = 8298^2 + 12089^2 .

It is not a de Polignac number, because 215000725 - 2²¹ = 212903573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215000696 and 215000705.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 4299990 + ... + 4300039.

Almost surely, 2^215000725 is an apocalyptic number.

215000725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215000725 is a deficient number, since it is larger than the sum of its proper divisors (51600205).

215000725 is an equidigital number, since it uses as much as digits as its factorization.

215000725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8600039 (or 8600034 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 215000725 is about 14662.9030208891. The cubic root of 215000725 is about 599.0733148650.

The spelling of 215000725 in words is "two hundred fifteen million, seven hundred twenty-five", and thus it is an aban number.