522222225 has 24 divisors (see below), whose sum is σ = 986752320. Its totient is φ = 238729920.

The previous prime is 522222191. The next prime is 522222241.

522222225 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 522222225 - 2¹⁰ = 522221201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 522222195 and 522222204.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496830 + ... + 497879.

It is an arithmetic number, because the mean of its divisors is an integer number (41114680).

Almost surely, 2^522222225 is an apocalyptic number.

It is an amenable number.

522222225 is a deficient number, since it is larger than the sum of its proper divisors (464530095).

522222225 is a wasteful number, since it uses less digits than its factorization.

522222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994729 (or 994724 counting only the distinct ones).

The product of its digits is 3200, while the sum is 24.

The square root of 522222225 is about 22852.1820621139. The cubic root of 522222225 is about 805.2890311481.

The spelling of 522222225 in words is "five hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-five".