22206561456025 has 6 divisors (see below), whose sum is σ = 27536136205502. Its totient is φ = 17765249164800.

The previous prime is 22206561456019. The next prime is 22206561456049. The reversal of 22206561456025 is 52065416560222.

It can be written as a sum of positive squares in 3 ways, for example, as 5002540596496 + 17204020859529 = 2236636^2 + 4147773^2 .

It is not a de Polignac number, because 22206561456025 - 2¹⁷ = 22206561324953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 444131229096 + ... + 444131229145.

Almost surely, 2^{22206561456025} is an apocalyptic number.

22206561456025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22206561456025 is a deficient number, since it is larger than the sum of its proper divisors (5329574749477).

22206561456025 is an equidigital number, since it uses as much as digits as its factorization.

22206561456025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888262458251 (or 888262458246 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 22206561456025 in words is "twenty-two trillion, two hundred six billion, five hundred sixty-one million, four hundred fifty-six thousand, twenty-five".