205520256 has 48 divisors (see below), whose sum is σ = 591409260. Its totient is φ = 68506368.

The previous prime is 205520243. The next prime is 205520269. The reversal of 205520256 is 652025502.

It is an interprime number because it is at equal distance from previous prime (205520243) and next prime (205520269).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88050 + ... + 90353.

Almost surely, 2^205520256 is an apocalyptic number.

It is an amenable number.

205520256 is an abundant number, since it is smaller than the sum of its proper divisors (385889004).

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

205520256 is a wasteful number, since it uses less digits than its factorization.

205520256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178423 (or 178408 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 205520256 is about 14335.9776785541. The cubic root of 205520256 is about 590.1352328142.

Adding to 205520256 its reverse (652025502), we get a palindrome (857545758).

The spelling of 205520256 in words is "two hundred five million, five hundred twenty thousand, two hundred fifty-six".