255555235650 has 192 divisors, whose sum is σ = 750447968256. Its totient is φ = 56736288000.

The previous prime is 255555235631. The next prime is 255555235681. The reversal of 255555235650 is 56532555552.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 255555235650.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2677245 + ... + 2771055.

It is an arithmetic number, because the mean of its divisors is an integer number (3908583168).

Almost surely, 2^255555235650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255555235650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375223984128).

255555235650 is an abundant number, since it is smaller than the sum of its proper divisors (494892732606).

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

255555235650 is a wasteful number, since it uses less digits than its factorization.

255555235650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93977 (or 93972 counting only the distinct ones).

The product of its (nonzero) digits is 5625000, while the sum is 48.

The spelling of 255555235650 in words is "two hundred fifty-five billion, five hundred fifty-five million, two hundred thirty-five thousand, six hundred fifty".