6635338087225 has 27 divisors (see below), whose sum is σ = 8424316876269. Its totient is φ = 5184389565600.

The previous prime is 6635338087211. The next prime is 6635338087289. The reversal of 6635338087225 is 5227808335366.

The square root of 6635338087225 is 2575915.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1310541854521 + 5324796232704 = 1144789^2 + 2307552^2 .

It is not a de Polignac number, because 6635338087225 - 2¹¹ = 6635338085177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6635338087225.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 553815735 + ... + 553827715.

Almost surely, 2^{6635338087225} is an apocalyptic number.

6635338087225 is the 2575915-th square number.

6635338087225 is the 1287958-th centered octagonal number.

It is an amenable number.

6635338087225 is a deficient number, since it is larger than the sum of its proper divisors (1788978789044).

6635338087225 is an frugal number, since it uses more digits than its factorization.

6635338087225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24058 (or 12029 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 58.

The spelling of 6635338087225 in words is "six trillion, six hundred thirty-five billion, three hundred thirty-eight million, eighty-seven thousand, two hundred twenty-five".