103215225 has 12 divisors (see below), whose sum is σ = 170649296. Its totient is φ = 55048080.

The previous prime is 103215209. The next prime is 103215227. The reversal of 103215225 is 522512301.

It is not a de Polignac number, because 103215225 - 2⁴ = 103215209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103215227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 688027 + ... + 688176.

Almost surely, 2^103215225 is an apocalyptic number.

103215225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

103215225 is a deficient number, since it is larger than the sum of its proper divisors (67434071).

103215225 is a wasteful number, since it uses less digits than its factorization.

103215225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376216 (or 1376211 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 103215225 is about 10159.4894064613. The cubic root of 103215225 is about 469.0810852056.

Adding to 103215225 its reverse (522512301), we get a palindrome (625727526).

The spelling of 103215225 in words is "one hundred three million, two hundred fifteen thousand, two hundred twenty-five".