205125355204 has 96 divisors (see below), whose sum is σ = 458869743360. Its totient is φ = 77900390400.

The previous prime is 205125355187. The next prime is 205125355223. The reversal of 205125355204 is 402553521502.

It is a super-2 number, since 2×205125355204² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205125355204.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15513204 + ... + 15526420.

It is an arithmetic number, because the mean of its divisors is an integer number (4779893160).

Almost surely, 2^205125355204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205125355204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229434871680).

205125355204 is an abundant number, since it is smaller than the sum of its proper divisors (253744388156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205125355204 is a wasteful number, since it uses less digits than its factorization.

205125355204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14509 (or 14507 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 205125355204 its reverse (402553521502), we get a palindrome (607678876706).

The spelling of 205125355204 in words is "two hundred five billion, one hundred twenty-five million, three hundred fifty-five thousand, two hundred four".