10215225 has 36 divisors (see below), whose sum is σ = 18550896. Its totient is φ = 5372640.

The previous prime is 10215211. The next prime is 10215229. The reversal of 10215225 is 52251201.

It is not a de Polignac number, because 10215225 - 2¹² = 10211129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10215198 and 10215207.

It is not an unprimeable number, because it can be changed into a prime (10215229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18402 + ... + 18948.

Almost surely, 2^10215225 is an apocalyptic number.

10215225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10215225 is a deficient number, since it is larger than the sum of its proper divisors (8335671).

10215225 is a wasteful number, since it uses less digits than its factorization.

10215225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 10215225 is about 3196.1265619496. The cubic root of 10215225 is about 216.9781384816.

Adding to 10215225 its reverse (52251201), we get a palindrome (62466426).

It can be divided in two parts, 10215 and 225, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 10215225 in words is "ten million, two hundred fifteen thousand, two hundred twenty-five".