205251433 has 4 divisors (see below), whose sum is σ = 216054160. Its totient is φ = 194448708.

The previous prime is 205251407. The next prime is 205251439. The reversal of 205251433 is 334152502.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205251433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205251398 and 205251407.

It is not an unprimeable number, because it can be changed into a prime (205251439) 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, 5401335 + ... + 5401372.

It is an arithmetic number, because the mean of its divisors is an integer number (54013540).

Almost surely, 2^205251433 is an apocalyptic number.

It is an amenable number.

205251433 is a deficient number, since it is larger than the sum of its proper divisors (10802727).

205251433 is a wasteful number, since it uses less digits than its factorization.

205251433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10802726.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 205251433 is about 14326.5987938519. The cubic root of 205251433 is about 589.8778191889.

The spelling of 205251433 in words is "two hundred five million, two hundred fifty-one thousand, four hundred thirty-three".