99941338225 has 27 divisors (see below), whose sum is σ = 129596811393. Its totient is φ = 76449030240.

The previous prime is 99941338223. The next prime is 99941338241. The reversal of 99941338225 is 52283314999.

The square root of 99941338225 is 316135.

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

It can be written as a sum of positive squares in 4 ways, for example, as 29542390641 + 70398947584 = 171879^2 + 265328^2 .

It is not a de Polignac number, because 99941338225 - 2¹ = 99941338223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99941338223) 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, 36354151 + ... + 36356899.

Almost surely, 2^99941338225 is an apocalyptic number.

99941338225 is the 316135-th square number.

99941338225 is the 158068-th centered octagonal number.

It is an amenable number.

99941338225 is a deficient number, since it is larger than the sum of its proper divisors (29655473168).

99941338225 is an frugal number, since it uses more digits than its factorization.

99941338225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5554 (or 2777 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 55.

The spelling of 99941338225 in words is "ninety-nine billion, nine hundred forty-one million, three hundred thirty-eight thousand, two hundred twenty-five".