729392862025 has 9 divisors (see below), whose sum is σ = 904452444021. Its totient is φ = 583510873440.

The previous prime is 729392862017. The next prime is 729392862047. The reversal of 729392862025 is 520268293927.

The square root of 729392862025 is 854045.

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 102059164089 + 627333697936 = 319467^2 + 792044^2 .

It is not a de Polignac number, because 729392862025 - 2³ = 729392862017 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, 4184821 + ... + 4355629.

Almost surely, 2^729392862025 is an apocalyptic number.

729392862025 is the 854045-th square number.

729392862025 is the 427023-rd centered octagonal number.

It is an amenable number.

729392862025 is a deficient number, since it is larger than the sum of its proper divisors (175059581996).

729392862025 is an frugal number, since it uses more digits than its factorization.

729392862025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341628 (or 170814 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 729392862025 in words is "seven hundred twenty-nine billion, three hundred ninety-two million, eight hundred sixty-two thousand, twenty-five".