10215265 has 4 divisors (see below), whose sum is σ = 12258324. Its totient is φ = 8172208.

The previous prime is 10215263. The next prime is 10215269. The reversal of 10215265 is 56251201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56251201 = 193 ⋅291457.

It can be written as a sum of positive squares in 2 ways, for example, as 7683984 + 2531281 = 2772^2 + 1591^2 .

It is a cyclic number.

It is not a de Polignac number, because 10215265 - 2¹ = 10215263 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10215263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021522 + ... + 1021531.

It is an arithmetic number, because the mean of its divisors is an integer number (3064581).

Almost surely, 2^10215265 is an apocalyptic number.

It is an amenable number.

10215265 is a deficient number, since it is larger than the sum of its proper divisors (2043059).

10215265 is an equidigital number, since it uses as much as digits as its factorization.

10215265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043058.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 10215265 is about 3196.1328195180. The cubic root of 10215265 is about 216.9784216901.

Adding to 10215265 its reverse (56251201), we get a palindrome (66466466).

The spelling of 10215265 in words is "ten million, two hundred fifteen thousand, two hundred sixty-five".