225541215 has 12 divisors (see below), whose sum is σ = 390938184. Its totient is φ = 120288624.

The previous prime is 225541201. The next prime is 225541223. The reversal of 225541215 is 512145522.

It is not a de Polignac number, because 225541215 - 2⁷ = 225541087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2505969 + ... + 2506058.

It is an arithmetic number, because the mean of its divisors is an integer number (32578182).

Almost surely, 2^225541215 is an apocalyptic number.

225541215 is a deficient number, since it is larger than the sum of its proper divisors (165396969).

225541215 is a wasteful number, since it uses less digits than its factorization.

225541215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012038 (or 5012035 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 225541215 is about 15018.0296643734. The cubic root of 225541215 is about 608.7074800205.

Adding to 225541215 its reverse (512145522), we get a palindrome (737686737).

The spelling of 225541215 in words is "two hundred twenty-five million, five hundred forty-one thousand, two hundred fifteen".