99501722253025 has 9 divisors (see below), whose sum is σ = 123382197439123. Its totient is φ = 79601337902200.

The previous prime is 99501722253023. The next prime is 99501722253083. The reversal of 99501722253025 is 52035222710599.

The square root of 99501722253025 is 9975055.

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., 35820620011089 + 63681102241936 = 5985033^2 + 7980044^2 .

It is not a de Polignac number, because 99501722253025 - 2¹ = 99501722253023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99501722253023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 48877770 + ... + 50872780.

Almost surely, 2^{99501722253025} is an apocalyptic number.

99501722253025 is the 9975055-th square number.

99501722253025 is the 4987528-th centered octagonal number.

It is an amenable number.

99501722253025 is a deficient number, since it is larger than the sum of its proper divisors (23880475186098).

99501722253025 is an frugal number, since it uses more digits than its factorization.

99501722253025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990032 (or 1995016 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 99501722253025 in words is "ninety-nine trillion, five hundred one billion, seven hundred twenty-two million, two hundred fifty-three thousand, twenty-five".