65134696225 has 9 divisors (see below), whose sum is σ = 80768605683. Its totient is φ = 52106736120.

The previous prime is 65134696217. The next prime is 65134696307. The reversal of 65134696225 is 52269643156.

The square root of 65134696225 is 255215.

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., 23448490641 + 41686205584 = 153129^2 + 204172^2 .

It is not a de Polignac number, because 65134696225 - 2³ = 65134696217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1250554 + ... + 1301596.

Almost surely, 2^65134696225 is an apocalyptic number.

65134696225 is the 255215-th square number.

65134696225 is the 127608-th centered octagonal number.

It is an amenable number.

65134696225 is a deficient number, since it is larger than the sum of its proper divisors (15633909458).

65134696225 is an frugal number, since it uses more digits than its factorization.

65134696225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102096 (or 51048 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 49.

Multiplying 65134696225 by its sum of digits (49), we get a square (3191600115025 = 1786505²).

The spelling of 65134696225 in words is "sixty-five billion, one hundred thirty-four million, six hundred ninety-six thousand, two hundred twenty-five".