276723225 has 27 divisors (see below), whose sum is σ = 496089373. Its totient is φ = 147452640.

The previous prime is 276723203. The next prime is 276723253. The reversal of 276723225 is 522327672.

276723225 = 2328² + 2329² + ... + 2377².

The square root of 276723225 is 16635.

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 142348761 + 134374464 = 11931^2 + 11592^2 .

It is a de Polignac number, because none of the positive numbers 2^k-276723225 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 276723225.

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, 248971 + ... + 250079.

Almost surely, 2^276723225 is an apocalyptic number.

276723225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

276723225 is the 16635-th square number.

276723225 is the 8318-th centered octagonal number.

It is an amenable number.

276723225 is a deficient number, since it is larger than the sum of its proper divisors (219366148).

276723225 is an equidigital number, since it uses as much as digits as its factorization.

276723225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234 (or 1117 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The cubic root of 276723225 is about 651.6512061998.

Multiplying 276723225 by its sum of digits (36), we get a square (9962036100 = 99810²).

The spelling of 276723225 in words is "two hundred seventy-six million, seven hundred twenty-three thousand, two hundred twenty-five".