65247039225 has 27 divisors (see below), whose sum is σ = 116871560013. Its totient is φ = 34796377440.

The previous prime is 65247039223. The next prime is 65247039271. The reversal of 65247039225 is 52293074256.

The square root of 65247039225 is 255435.

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

65247039225 is a `hidden beast` number, since 6 + 524 + 70 + 39 + 2 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2081275641 + 63165763584 = 45621^2 + 251328^2 .

It is not a de Polignac number, because 65247039225 - 2¹ = 65247039223 is a prime.

It is a super-3 number, since 3×65247039225³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (65247039223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3823011 + ... + 3840039.

Almost surely, 2^65247039225 is an apocalyptic number.

65247039225 is the 255435-th square number.

65247039225 is the 127718-th centered octagonal number.

It is an amenable number.

65247039225 is a deficient number, since it is larger than the sum of its proper divisors (51624520788).

65247039225 is an frugal number, since it uses more digits than its factorization.

65247039225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34074 (or 17037 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 65247039225 in words is "sixty-five billion, two hundred forty-seven million, thirty-nine thousand, two hundred twenty-five".