99945307480225 has 27 divisors (see below), whose sum is σ = 124893632965939. Its totient is φ = 79340694383600.

The previous prime is 99945307480217. The next prime is 99945307480253. The reversal of 99945307480225 is 52208470354999.

The square root of 99945307480225 is 9997265.

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., 35980310692881 + 63964996787344 = 5998359^2 + 7997812^2 .

It is not a de Polignac number, because 99945307480225 - 2³ = 99945307480217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6548200944 + ... + 6548216206.

Almost surely, 2^{99945307480225} is an apocalyptic number.

99945307480225 is the 9997265-th square number.

99945307480225 is the 4998633-rd centered octagonal number.

It is an amenable number.

99945307480225 is a deficient number, since it is larger than the sum of its proper divisors (24948325485714).

99945307480225 is an frugal number, since it uses more digits than its factorization.

99945307480225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30798 (or 15399 counting only the distinct ones).

The product of its (nonzero) digits is 195955200, while the sum is 67.

The spelling of 99945307480225 in words is "ninety-nine trillion, nine hundred forty-five billion, three hundred seven million, four hundred eighty thousand, two hundred twenty-five".