819052150225 has 9 divisors (see below), whose sum is σ = 1015630277403. Its totient is φ = 655238100120.

The previous prime is 819052150207. The next prime is 819052150229. The reversal of 819052150225 is 522051250918.

The square root of 819052150225 is 905015.

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., 294858774081 + 524193376144 = 543009^2 + 724012^2 .

It is not a de Polignac number, because 819052150225 - 2¹¹ = 819052148177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (819052150229) 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, 4434574 + ... + 4615576.

Almost surely, 2^819052150225 is an apocalyptic number.

819052150225 is the 905015-th square number.

819052150225 is the 452508-th centered octagonal number.

It is an amenable number.

819052150225 is a deficient number, since it is larger than the sum of its proper divisors (196578127178).

819052150225 is an frugal number, since it uses more digits than its factorization.

819052150225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362016 (or 181008 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 819052150225 in words is "eight hundred nineteen billion, fifty-two million, one hundred fifty thousand, two hundred twenty-five".