26622817225 has 9 divisors (see below), whose sum is σ = 33013305013. Its totient is φ = 21297601120.

The previous prime is 26622817223. The next prime is 26622817231. The reversal of 26622817225 is 52271822662.

The square root of 26622817225 is 163165.

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 94225849 + 26528591376 = 9707^2 + 162876^2 .

It is not a de Polignac number, because 26622817225 - 2¹ = 26622817223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26622817223) 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, 799509 + ... + 832141.

Almost surely, 2^26622817225 is an apocalyptic number.

26622817225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26622817225 is the 163165-th square number.

26622817225 is the 81583-rd centered octagonal number.

It is an amenable number.

26622817225 is a deficient number, since it is larger than the sum of its proper divisors (6390487788).

26622817225 is an frugal number, since it uses more digits than its factorization.

26622817225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65276 (or 32638 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The spelling of 26622817225 in words is "twenty-six billion, six hundred twenty-two million, eight hundred seventeen thousand, two hundred twenty-five".