215363225 has 48 divisors (see below), whose sum is σ = 352584576. Its totient is φ = 126336000.

The previous prime is 215363207. The next prime is 215363227. The reversal of 215363225 is 522363512.

215363225 = 15² + 16² + ... + 864².

It is not a de Polignac number, because 215363225 - 2¹⁰ = 215362201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215363227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29435 + ... + 36015.

It is an arithmetic number, because the mean of its divisors is an integer number (7345512).

Almost surely, 2^215363225 is an apocalyptic number.

215363225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215363225 is a deficient number, since it is larger than the sum of its proper divisors (137221351).

215363225 is a wasteful number, since it uses less digits than its factorization.

215363225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626 (or 6621 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 215363225 is about 14675.2589414974. The cubic root of 215363225 is about 599.4098131747.

The spelling of 215363225 in words is "two hundred fifteen million, three hundred sixty-three thousand, two hundred twenty-five".