522566665225 has 24 divisors (see below), whose sum is σ = 708892833312. Its totient is φ = 378971788800.

The previous prime is 522566665213. The next prime is 522566665259.

522566665225 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 522566665225 - 2⁹ = 522566664713 is a prime.

It is a Duffinian number.

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, 2594487 + ... + 2788636.

It is an arithmetic number, because the mean of its divisors is an integer number (29537201388).

Almost surely, 2^522566665225 is an apocalyptic number.

522566665225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

522566665225 is a deficient number, since it is larger than the sum of its proper divisors (186326168087).

522566665225 is a wasteful number, since it uses less digits than its factorization.

522566665225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383497 (or 5383492 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 52.

The spelling of 522566665225 in words is "five hundred twenty-two billion, five hundred sixty-six million, six hundred sixty-five thousand, two hundred twenty-five".