255245211540 has 144 divisors (see below), whose sum is σ = 845678957760. Its totient is φ = 61800752640.

The previous prime is 255245211523. The next prime is 255245211581. The reversal of 255245211540 is 45112542552.

255245211540 is a `hidden beast` number, since 2 + 5 + 52 + 4 + 52 + 11 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 255245211495 and 255245211504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1522147 + ... + 1681493.

It is an arithmetic number, because the mean of its divisors is an integer number (5872770540).

Almost surely, 2^255245211540 is an apocalyptic number.

255245211540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255245211540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422839478880).

255245211540 is an abundant number, since it is smaller than the sum of its proper divisors (590433746220).

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

255245211540 is a wasteful number, since it uses less digits than its factorization.

255245211540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160182 (or 160177 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 255245211540 in words is "two hundred fifty-five billion, two hundred forty-five million, two hundred eleven thousand, five hundred forty".