99613274616025 has 9 divisors (see below), whose sum is σ = 123520522403901. Its totient is φ = 79690579770240.

The previous prime is 99613274616017. The next prime is 99613274616047. The reversal of 99613274616025 is 52061647231699.

It is a happy number.

The square root of 99613274616025 is 9980645.

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 24689639263689 + 74923635352336 = 4968867^2 + 8655844^2 .

It is not a de Polignac number, because 99613274616025 - 2³ = 99613274616017 is a prime.

It is a super-2 number, since 2×99613274616025² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 48905161 + ... + 50901289.

Almost surely, 2^{99613274616025} is an apocalyptic number.

99613274616025 is the 9980645-th square number.

99613274616025 is the 4990323-rd centered octagonal number.

It is an amenable number.

99613274616025 is a deficient number, since it is larger than the sum of its proper divisors (23907247787876).

99613274616025 is an frugal number, since it uses more digits than its factorization.

99613274616025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992268 (or 1996134 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 99613274616025 in words is "ninety-nine trillion, six hundred thirteen billion, two hundred seventy-four million, six hundred sixteen thousand, twenty-five".