255525527550 has 48 divisors (see below), whose sum is σ = 635498633520. Its totient is φ = 67947095040.

The previous prime is 255525527549. The next prime is 255525527561. The reversal of 255525527550 is 55725525552.

It is a happy number.

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 255525527550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2359945 + ... + 2465844.

It is an arithmetic number, because the mean of its divisors is an integer number (13239554865).

Almost surely, 2^255525527550 is an apocalyptic number.

255525527550 is an abundant number, since it is smaller than the sum of its proper divisors (379973105970).

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

255525527550 is a wasteful number, since it uses less digits than its factorization.

255525527550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826157 (or 4826152 counting only the distinct ones).

The product of its (nonzero) digits is 4375000, while the sum is 48.

The spelling of 255525527550 in words is "two hundred fifty-five billion, five hundred twenty-five million, five hundred twenty-seven thousand, five hundred fifty".