255085550525 has 24 divisors (see below), whose sum is σ = 343123783464. Its totient is φ = 186995865600.

The previous prime is 255085550519. The next prime is 255085550527. The reversal of 255085550525 is 525055580552.

It can be written as a sum of positive squares in 12 ways, for example, as 135962550361 + 119123000164 = 368731^2 + 345142^2 .

It is a de Polignac number, because none of the positive numbers 2^k-255085550525 is a prime.

It is a Duffinian 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 255085550525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255085550527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2819996 + ... + 2909045.

It is an arithmetic number, because the mean of its divisors is an integer number (14296824311).

Almost surely, 2^255085550525 is an apocalyptic number.

255085550525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255085550525 is a deficient number, since it is larger than the sum of its proper divisors (88038232939).

255085550525 is a wasteful number, since it uses less digits than its factorization.

255085550525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729201 (or 5729196 counting only the distinct ones).

The product of its (nonzero) digits is 2500000, while the sum is 47.

The spelling of 255085550525 in words is "two hundred fifty-five billion, eighty-five million, five hundred fifty thousand, five hundred twenty-five".