2209784025025 has 12 divisors (see below), whose sum is σ = 2742880599292. Its totient is φ = 1766054053440.

The previous prime is 2209784025019. The next prime is 2209784025091. The reversal of 2209784025025 is 5205204879022.

It can be written as a sum of positive squares in 6 ways, for example, as 155400735681 + 2054383289344 = 394209^2 + 1433312^2 .

It is not a de Polignac number, because 2209784025025 - 2³⁹ = 1660028211137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44303742 + ... + 44353591.

Almost surely, 2^{2209784025025} is an apocalyptic number.

2209784025025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2209784025025 is a deficient number, since it is larger than the sum of its proper divisors (533096574267).

2209784025025 is an equidigital number, since it uses as much as digits as its factorization.

2209784025025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88658340 (or 88658335 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 2209784025025 in words is "two trillion, two hundred nine billion, seven hundred eighty-four million, twenty-five thousand, twenty-five".