205525213270 has 32 divisors (see below), whose sum is σ = 398474137152. Its totient is φ = 75872629632.

The previous prime is 205525213217. The next prime is 205525213279. The reversal of 205525213270 is 72312525502.

205525213270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205525213270² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205525213279) 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 15 ways as a sum of consecutive naturals, for example, 601239 + ... + 878941.

It is an arithmetic number, because the mean of its divisors is an integer number (12452316786).

Almost surely, 2^205525213270 is an apocalyptic number.

205525213270 is a deficient number, since it is larger than the sum of its proper divisors (192948923882).

205525213270 is a wasteful number, since it uses less digits than its factorization.

205525213270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283416.

The product of its (nonzero) digits is 42000, while the sum is 34.

Adding to 205525213270 its reverse (72312525502), we get a palindrome (277837738772).

The spelling of 205525213270 in words is "two hundred five billion, five hundred twenty-five million, two hundred thirteen thousand, two hundred seventy".