280216716025 has 9 divisors (see below), whose sum is σ = 347472009903. Its totient is φ = 224171255400.

The previous prime is 280216715957. The next prime is 280216716053. The reversal of 280216716025 is 520617612082.

The square root of 280216716025 is 529355.

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., 100878017769 + 179338698256 = 317613^2 + 423484^2 .

It is not a de Polignac number, because 280216716025 - 2²⁹ = 279679845113 is a prime.

It is a super-3 number, since 3×280216716025³ (a number of 35 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, 2593840 + ... + 2699710.

Almost surely, 2^280216716025 is an apocalyptic number.

280216716025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

280216716025 is the 529355-th square number.

280216716025 is the 264678-th centered octagonal number.

It is an amenable number.

280216716025 is a deficient number, since it is larger than the sum of its proper divisors (67255293878).

280216716025 is an frugal number, since it uses more digits than its factorization.

280216716025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211752 (or 105876 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 280216716025 in words is "two hundred eighty billion, two hundred sixteen million, seven hundred sixteen thousand, twenty-five".