662490184225 has 9 divisors (see below), whose sum is σ = 821492874867. Its totient is φ = 529988891640.

The previous prime is 662490184183. The next prime is 662490184247. The reversal of 662490184225 is 522481094266.

The square root of 662490184225 is 813935.

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

It can be written as a sum of positive squares in only one way, i.e., 238496466321 + 423993717904 = 488361^2 + 651148^2 .

It is not a de Polignac number, because 662490184225 - 2¹⁷ = 662490053153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3988282 + ... + 4151068.

Almost surely, 2^662490184225 is an apocalyptic number.

662490184225 is the 813935-th square number.

662490184225 is the 406968-th centered octagonal number.

It is an amenable number.

662490184225 is a deficient number, since it is larger than the sum of its proper divisors (159002690642).

662490184225 is an frugal number, since it uses more digits than its factorization.

662490184225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325584 (or 162792 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

Multiplying 662490184225 by its sum of digits (49), we get a square (32462019027025 = 5697545²).

The spelling of 662490184225 in words is "six hundred sixty-two billion, four hundred ninety million, one hundred eighty-four thousand, two hundred twenty-five".