205425402204 has 192 divisors, whose sum is σ = 539770355712. Its totient is φ = 60283641600.

The previous prime is 205425402197. The next prime is 205425402209. The reversal of 205425402204 is 402204524502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205425402209) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127355302 + ... + 127356914.

It is an arithmetic number, because the mean of its divisors is an integer number (2811303936).

Almost surely, 2^205425402204 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 205425402204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269885177856).

205425402204 is an abundant number, since it is smaller than the sum of its proper divisors (334344953508).

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

205425402204 is a wasteful number, since it uses less digits than its factorization.

205425402204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

Adding to 205425402204 its reverse (402204524502), we get a palindrome (607629926706).

The spelling of 205425402204 in words is "two hundred five billion, four hundred twenty-five million, four hundred two thousand, two hundred four".