205525101 has 4 divisors (see below), whose sum is σ = 274033472. Its totient is φ = 137016732.

The previous prime is 205525097. The next prime is 205525123. The reversal of 205525101 is 101525502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 205525101 - 2² = 205525097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205525301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34254181 + ... + 34254186.

It is an arithmetic number, because the mean of its divisors is an integer number (68508368).

Almost surely, 2^205525101 is an apocalyptic number.

It is an amenable number.

205525101 is a deficient number, since it is larger than the sum of its proper divisors (68508371).

205525101 is an equidigital number, since it uses as much as digits as its factorization.

205525101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68508370.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 205525101 is about 14336.1466580110. The cubic root of 205525101 is about 590.1398701231.

The spelling of 205525101 in words is "two hundred five million, five hundred twenty-five thousand, one hundred one".