225222515 has 16 divisors (see below), whose sum is σ = 317226432. Its totient is φ = 150263424.

The previous prime is 225222499. The next prime is 225222521. The reversal of 225222515 is 515222522.

It is a cyclic number.

It is not a de Polignac number, because 225222515 - 2⁴ = 225222499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85664 + ... + 88253.

It is an arithmetic number, because the mean of its divisors is an integer number (19826652).

Almost surely, 2^225222515 is an apocalyptic number.

225222515 is a deficient number, since it is larger than the sum of its proper divisors (92003917).

225222515 is a wasteful number, since it uses less digits than its factorization.

225222515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173966.

The product of its digits is 4000, while the sum is 26.

The square root of 225222515 is about 15007.4153337608. The cubic root of 225222515 is about 608.4206344133.

The spelling of 225222515 in words is "two hundred twenty-five million, two hundred twenty-two thousand, five hundred fifteen".