729270025 has 27 divisors (see below), whose sum is σ = 996005479. Its totient is φ = 529298000.

The previous prime is 729270013. The next prime is 729270041. The reversal of 729270025 is 520072927.

The square root of 729270025 is 27005.

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., 262537209 + 466732816 = 16203^2 + 21604^2 .

It is not a de Polignac number, because 729270025 - 2¹³ = 729261833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1485030 + ... + 1485520.

Almost surely, 2^729270025 is an apocalyptic number.

729270025 is the 27005-th square number.

729270025 is the 13503-rd centered octagonal number.

It is an amenable number.

729270025 is a deficient number, since it is larger than the sum of its proper divisors (266735454).

729270025 is an equidigital number, since it uses as much as digits as its factorization.

729270025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The cubic root of 729270025 is about 900.1111076820. Note that the first 4 decimals are identical.

The spelling of 729270025 in words is "seven hundred twenty-nine million, two hundred seventy thousand, twenty-five".