255612745040 has 20 divisors (see below), whose sum is σ = 594299632404. Its totient is φ = 102245097984.

The previous prime is 255612745039. The next prime is 255612745043. The reversal of 255612745040 is 40547216552.

It can be written as a sum of positive squares in 2 ways, for example, as 128697257536 + 126915487504 = 358744^2 + 356252^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255612745043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1597579577 + ... + 1597579736.

Almost surely, 2^255612745040 is an apocalyptic number.

255612745040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255612745040 is an abundant number, since it is smaller than the sum of its proper divisors (338686887364).

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

255612745040 is a wasteful number, since it uses less digits than its factorization.

255612745040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195159326 (or 3195159320 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 41.

The spelling of 255612745040 in words is "two hundred fifty-five billion, six hundred twelve million, seven hundred forty-five thousand, forty".