255505250550 has 48 divisors (see below), whose sum is σ = 691257845952. Its totient is φ = 61940666400.

The previous prime is 255505250537. The next prime is 255505250563. The reversal of 255505250550 is 55052505552.

It is an interprime number because it is at equal distance from previous prime (255505250537) and next prime (255505250563).

It is a junction number, because it is equal to n+sod(n) for n = 255505250499 and 255505250508.

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, 77424184 + ... + 77427483.

It is an arithmetic number, because the mean of its divisors is an integer number (14401205124).

Almost surely, 2^255505250550 is an apocalyptic number.

255505250550 is an abundant number, since it is smaller than the sum of its proper divisors (435752595402).

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

255505250550 is a wasteful number, since it uses less digits than its factorization.

255505250550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154851693 (or 154851688 counting only the distinct ones).

The product of its (nonzero) digits is 312500, while the sum is 39.

The spelling of 255505250550 in words is "two hundred fifty-five billion, five hundred five million, two hundred fifty thousand, five hundred fifty".