8279747277025 has 81 divisors (see below), whose sum is σ = 12607695048339. Its totient is φ = 5377479982560.

The previous prime is 8279747276981. The next prime is 8279747277031. The reversal of 8279747277025 is 5207727479728.

The square root of 8279747277025 is 2877455.

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., 2980709019729 + 5299038257296 = 1726473^2 + 2301964^2 .

It is not a de Polignac number, because 8279747277025 - 2¹³ = 8279747268833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1913505412 + ... + 1913509738.

Almost surely, 2^{8279747277025} is an apocalyptic number.

8279747277025 is the 2877455-th square number.

8279747277025 is the 1438728-th centered octagonal number.

It is an amenable number.

8279747277025 is a deficient number, since it is larger than the sum of its proper divisors (4327947771314).

8279747277025 is an frugal number, since it uses more digits than its factorization.

8279747277025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8716 (or 4358 counting only the distinct ones).

The product of its (nonzero) digits is 193616640, while the sum is 67.

The spelling of 8279747277025 in words is "eight trillion, two hundred seventy-nine billion, seven hundred forty-seven million, two hundred seventy-seven thousand, twenty-five".