205212403253 has 64 divisors (see below), whose sum is σ = 254828851200. Its totient is φ = 162708860160.

The previous prime is 205212403159. The next prime is 205212403259. The reversal of 205212403253 is 352304212502.

It is not a de Polignac number, because 205212403253 - 2¹² = 205212399157 is a prime.

It is a super-2 number, since 2×205212403253² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205212403259) 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, 40722308 + ... + 40727346.

It is an arithmetic number, because the mean of its divisors is an integer number (3981700800).

Almost surely, 2^205212403253 is an apocalyptic number.

It is an amenable number.

205212403253 is a deficient number, since it is larger than the sum of its proper divisors (49616447947).

205212403253 is a wasteful number, since it uses less digits than its factorization.

205212403253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 205212403253 its reverse (352304212502), we get a palindrome (557516615755).

The spelling of 205212403253 in words is "two hundred five billion, two hundred twelve million, four hundred three thousand, two hundred fifty-three".