205401522205 has 64 divisors (see below), whose sum is σ = 282129039360. Its totient is φ = 142201382400.

The previous prime is 205401522169. The next prime is 205401522223. The reversal of 205401522205 is 502225104502.

It is not a de Polignac number, because 205401522205 - 2⁷ = 205401522077 is a prime.

It is a super-2 number, since 2×205401522205² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33819049 + ... + 33825121.

It is an arithmetic number, because the mean of its divisors is an integer number (4408266240).

Almost surely, 2^205401522205 is an apocalyptic number.

It is an amenable number.

205401522205 is a deficient number, since it is larger than the sum of its proper divisors (76727517155).

205401522205 is a wasteful number, since it uses less digits than its factorization.

205401522205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442.

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 205401522205 its reverse (502225104502), we get a palindrome (707626626707).

The spelling of 205401522205 in words is "two hundred five billion, four hundred one million, five hundred twenty-two thousand, two hundred five".