205152245 has 8 divisors (see below), whose sum is σ = 247459416. Its totient is φ = 163270656.

The previous prime is 205152239. The next prime is 205152247. The reversal of 205152245 is 542251502.

It can be written as a sum of positive squares in 4 ways, for example, as 2630884 + 202521361 = 1622^2 + 14231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205152245 - 2⁴ = 205152229 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 (205152247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105332 + ... + 107261.

It is an arithmetic number, because the mean of its divisors is an integer number (30932427).

Almost surely, 2^205152245 is an apocalyptic number.

It is an amenable number.

205152245 is a deficient number, since it is larger than the sum of its proper divisors (42307171).

205152245 is a wasteful number, since it uses less digits than its factorization.

205152245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212791.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 205152245 is about 14323.1367025523. The cubic root of 205152245 is about 589.7827841586.

The spelling of 205152245 in words is "two hundred five million, one hundred fifty-two thousand, two hundred forty-five".