522556025 has 6 divisors (see below), whose sum is σ = 647969502. Its totient is φ = 418044800.

The previous prime is 522555983. The next prime is 522556033. The reversal of 522556025 is 520655225.

It can be written as a sum of positive squares in 3 ways, for example, as 107578384 + 414977641 = 10372^2 + 20371^2 .

It is not a de Polignac number, because 522556025 - 2²⁰ = 521507449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 522555982 and 522556000.

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, 10451096 + ... + 10451145.

It is an arithmetic number, because the mean of its divisors is an integer number (107994917).

Almost surely, 2^522556025 is an apocalyptic number.

It is an amenable number.

522556025 is a deficient number, since it is larger than the sum of its proper divisors (125413477).

522556025 is a wasteful number, since it uses less digits than its factorization.

522556025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20902251 (or 20902246 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 522556025 is about 22859.4843555142. The cubic root of 522556025 is about 805.4605725681.

The spelling of 522556025 in words is "five hundred twenty-two million, five hundred fifty-six thousand, twenty-five".