205432325505 has 48 divisors (see below), whose sum is σ = 389042147520. Its totient is φ = 99452707200.

The previous prime is 205432325503. The next prime is 205432325513. The reversal of 205432325505 is 505523234502.

205432325505 is a `hidden beast` number, since 20 + 54 + 3 + 2 + 32 + 550 + 5 = 666.

It is not a de Polignac number, because 205432325505 - 2¹ = 205432325503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205432325505.

It is not an unprimeable number, because it can be changed into a prime (205432325503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13266 + ... + 641124.

It is an arithmetic number, because the mean of its divisors is an integer number (8105044740).

Almost surely, 2^205432325505 is an apocalyptic number.

It is an amenable number.

205432325505 is a deficient number, since it is larger than the sum of its proper divisors (183609822015).

205432325505 is a wasteful number, since it uses less digits than its factorization.

205432325505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628542 (or 628539 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 205432325505 in words is "two hundred five billion, four hundred thirty-two million, three hundred twenty-five thousand, five hundred five".