522512225 has 6 divisors (see below), whose sum is σ = 647915190. Its totient is φ = 418009760.

The previous prime is 522512219. The next prime is 522512251. The reversal of 522512225 is 522215225.

It can be written as a sum of positive squares in 3 ways, for example, as 2307361 + 520204864 = 1519^2 + 22808^2 .

It is not a de Polignac number, because 522512225 - 2⁴ = 522512209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 522512194 and 522512203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10450220 + ... + 10450269.

It is an arithmetic number, because the mean of its divisors is an integer number (107985865).

Almost surely, 2^522512225 is an apocalyptic number.

It is an amenable number.

522512225 is a deficient number, since it is larger than the sum of its proper divisors (125402965).

522512225 is a wasteful number, since it uses less digits than its factorization.

522512225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20900499 (or 20900494 counting only the distinct ones).

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

The square root of 522512225 is about 22858.5263085790. The cubic root of 522512225 is about 805.4380677029.

The spelling of 522512225 in words is "five hundred twenty-two million, five hundred twelve thousand, two hundred twenty-five".