8255238015249 has 9 divisors (see below), whose sum is σ = 11924245139209. Its totient is φ = 5503486263780.

The previous prime is 8255238015217. The next prime is 8255238015313. The reversal of 8255238015249 is 9425108325528.

The square root of 8255238015249 is 2873193.

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

8255238015249 is a `hidden beast` number, since 8 + 2 + 5 + 5 + 2 + 380 + 15 + 249 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 8255238015249 - 2⁵ = 8255238015217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8255238015195 and 8255238015204.

It is not an unprimeable number, because it can be changed into a prime (8255238015649) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8140714 + ... + 9098444.

Almost surely, 2^{8255238015249} is an apocalyptic number.

8255238015249 is the 2873193-rd square number.

8255238015249 is the 1436597-th centered octagonal number.

It is an amenable number.

8255238015249 is a deficient number, since it is larger than the sum of its proper divisors (3669007123960).

8255238015249 is an frugal number, since it uses more digits than its factorization.

8255238015249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915468 (or 957734 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 54.

The spelling of 8255238015249 in words is "eight trillion, two hundred fifty-five billion, two hundred thirty-eight million, fifteen thousand, two hundred forty-nine".