522490437225 has 45 divisors (see below), whose sum is σ = 967893159783. Its totient is φ = 278644218480.

The previous prime is 522490437191. The next prime is 522490437263. The reversal of 522490437225 is 522734094225.

The square root of 522490437225 is 722835.

It is a perfect power (a square), and thus also a powerful number.

522490437225 is a `hidden beast` number, since 52 + 2 + 490 + 43 + 72 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 188096557401 + 334393879824 = 433701^2 + 578268^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 522490437225 - 2³⁷ = 385051483753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 32519544 + ... + 32535606.

Almost surely, 2^522490437225 is an apocalyptic number.

522490437225 is the 722835-th square number.

522490437225 is the 361418-th centered octagonal number.

It is an amenable number.

522490437225 is a deficient number, since it is larger than the sum of its proper divisors (445402722558).

522490437225 is an frugal number, since it uses more digits than its factorization.

522490437225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32148 (or 16071 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 522490437225 in words is "five hundred twenty-two billion, four hundred ninety million, four hundred thirty-seven thousand, two hundred twenty-five".