2099354677225 has 27 divisors (see below), whose sum is σ = 2818975949829. Its totient is φ = 1550223136800.

The previous prime is 2099354677223. The next prime is 2099354677243. The reversal of 2099354677225 is 5227764539902.

It is a happy number.

The square root of 2099354677225 is 1448915.

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 541111773609 + 1558242903616 = 735603^2 + 1248296^2 .

It is not a de Polignac number, because 2099354677225 - 2¹ = 2099354677223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2099354677223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 94168330 + ... + 94190620.

Almost surely, 2^{2099354677225} is an apocalyptic number.

2099354677225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2099354677225 is the 1448915-th square number.

2099354677225 is the 724458-th centered octagonal number.

It is an amenable number.

2099354677225 is a deficient number, since it is larger than the sum of its proper divisors (719621272604).

2099354677225 is an frugal number, since it uses more digits than its factorization.

2099354677225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44618 (or 22309 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 61.

The spelling of 2099354677225 in words is "two trillion, ninety-nine billion, three hundred fifty-four million, six hundred seventy-seven thousand, two hundred twenty-five".