205320134525 has 48 divisors (see below), whose sum is σ = 285379264320. Its totient is φ = 145221465600.

The previous prime is 205320134521. The next prime is 205320134527. The reversal of 205320134525 is 525431023502.

It is not a de Polignac number, because 205320134525 - 2² = 205320134521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205320134491 and 205320134500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205320134521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36087881 + ... + 36093569.

It is an arithmetic number, because the mean of its divisors is an integer number (5945401340).

Almost surely, 2^205320134525 is an apocalyptic number.

205320134525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

205320134525 is a deficient number, since it is larger than the sum of its proper divisors (80059129795).

205320134525 is a wasteful number, since it uses less digits than its factorization.

205320134525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9294 (or 9289 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 205320134525 in words is "two hundred five billion, three hundred twenty million, one hundred thirty-four thousand, five hundred twenty-five".