205026256225 has 24 divisors (see below), whose sum is σ = 290592208448. Its totient is φ = 140569732800.

The previous prime is 205026256223. The next prime is 205026256243. The reversal of 205026256225 is 522652620502.

It is a happy number.

205026256225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205026256225 - 2¹ = 205026256223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205026256223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1230130 + ... + 1386820.

Almost surely, 2^205026256225 is an apocalyptic number.

205026256225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205026256225 is a deficient number, since it is larger than the sum of its proper divisors (85565952223).

205026256225 is a wasteful number, since it uses less digits than its factorization.

205026256225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164185 (or 164180 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 205026256225 its reverse (522652620502), we get a palindrome (727678876727).

The spelling of 205026256225 in words is "two hundred five billion, twenty-six million, two hundred fifty-six thousand, two hundred twenty-five".