6623751532225 has 9 divisors (see below), whose sum is σ = 8213467856713. Its totient is φ = 5298990931120.

The previous prime is 6623751532213. The next prime is 6623751532247. The reversal of 6623751532225 is 5222351573266.

The square root of 6623751532225 is 2573665.

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 585015408769 + 6038736123456 = 764863^2 + 2457384^2 .

It is not a de Polignac number, because 6623751532225 - 2¹⁷ = 6623751401153 is a prime.

It is a super-3 number, since 3×6623751532225³ (a number of 39 digits) contains 333 as substring.

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, 12610959 + ... + 13125691.

Almost surely, 2^{6623751532225} is an apocalyptic number.

6623751532225 is the 2573665-th square number.

6623751532225 is the 1286833-rd centered octagonal number.

It is an amenable number.

6623751532225 is a deficient number, since it is larger than the sum of its proper divisors (1589716324488).

6623751532225 is an frugal number, since it uses more digits than its factorization.

6623751532225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029476 (or 514738 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 49.

Multiplying 6623751532225 by its sum of digits (49), we get a square (324563825079025 = 18015655²).

The spelling of 6623751532225 in words is "six trillion, six hundred twenty-three billion, seven hundred fifty-one million, five hundred thirty-two thousand, two hundred twenty-five".