99160867782025 has 81 divisors (see below), whose sum is σ = 144438077135079. Its totient is φ = 67335213728160.

The previous prime is 99160867782023. The next prime is 99160867782029. The reversal of 99160867782025 is 52028776806199.

The square root of 99160867782025 is 9957955.

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., 35697912401529 + 63462955380496 = 5974773^2 + 7966364^2 .

It is not a de Polignac number, because 99160867782025 - 2¹ = 99160867782023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99160867782023) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 37292540146 + ... + 37292542804.

Almost surely, 2^{99160867782025} is an apocalyptic number.

99160867782025 is the 9957955-th square number.

99160867782025 is the 4978978-th centered octagonal number.

It is an amenable number.

99160867782025 is a deficient number, since it is larger than the sum of its proper divisors (45277209353054).

99160867782025 is an frugal number, since it uses more digits than its factorization.

99160867782025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 2778 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 70.

The spelling of 99160867782025 in words is "ninety-nine trillion, one hundred sixty billion, eight hundred sixty-seven million, seven hundred eighty-two thousand, twenty-five".