99790010355025 has 9 divisors (see below), whose sum is σ = 123739674775131. Its totient is φ = 79831968326040.

The previous prime is 99790010355017. The next prime is 99790010355043. The reversal of 99790010355025 is 52055301009799.

The square root of 99790010355025 is 9989495.

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., 35924403727809 + 63865606627216 = 5993697^2 + 7991596^2 .

It is not a de Polignac number, because 99790010355025 - 2³ = 99790010355017 is a prime.

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, 48948526 + ... + 50946424.

Almost surely, 2^{99790010355025} is an apocalyptic number.

99790010355025 is the 9989495-th square number.

99790010355025 is the 4994748-th centered octagonal number.

It is an amenable number.

99790010355025 is a deficient number, since it is larger than the sum of its proper divisors (23949664420106).

99790010355025 is an frugal number, since it uses more digits than its factorization.

99790010355025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995808 (or 1997904 counting only the distinct ones).

The product of its (nonzero) digits is 3827250, while the sum is 55.

The spelling of 99790010355025 in words is "ninety-nine trillion, seven hundred ninety billion, ten million, three hundred fifty-five thousand, twenty-five".