2199986065225 has 81 divisors (see below), whose sum is σ = 3120222291039. Its totient is φ = 1537818048000.

The previous prime is 2199986065099. The next prime is 2199986065241. The reversal of 2199986065225 is 5225606899912.

The square root of 2199986065225 is 1483235.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1709616395529 + 490369669696 = 1307523^2 + 700264^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2199986065225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1831794625 + ... + 1831795825.

Almost surely, 2^{2199986065225} is an apocalyptic number.

2199986065225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2199986065225 is the 1483235-th square number.

2199986065225 is the 741618-th centered octagonal number.

It is an amenable number.

2199986065225 is a deficient number, since it is larger than the sum of its proper divisors (920236225814).

2199986065225 is an equidigital number, since it uses as much as digits as its factorization.

2199986065225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 64.

Multiplying 2199986065225 by its sum of digits (64), we get a square (140799108174400 = 11865880²).

The spelling of 2199986065225 in words is "two trillion, one hundred ninety-nine billion, nine hundred eighty-six million, sixty-five thousand, two hundred twenty-five".