280629765025 has 27 divisors (see below), whose sum is σ = 351795739243. Its totient is φ = 222069104000.

The previous prime is 280629765007. The next prime is 280629765041. The reversal of 280629765025 is 520567926082.

The square root of 280629765025 is 529745.

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

It can be written as a sum of positive squares in 13 ways, for example, as 5021564769 + 275608200256 = 70863^2 + 524984^2 .

It is not a de Polignac number, because 280629765025 - 2⁵ = 280629764993 is a prime.

It is a Duffinian number.

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, 267520701 + ... + 267521749.

Almost surely, 2^280629765025 is an apocalyptic number.

280629765025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

280629765025 is the 529745-th square number.

280629765025 is the 264873-rd centered octagonal number.

It is an amenable number.

280629765025 is a deficient number, since it is larger than the sum of its proper divisors (71165974218).

280629765025 is an frugal number, since it uses more digits than its factorization.

280629765025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 280629765025 in words is "two hundred eighty billion, six hundred twenty-nine million, seven hundred sixty-five thousand, twenty-five".