255668747265 has 48 divisors (see below), whose sum is σ = 444470412672. Its totient is φ = 135953655552.

The previous prime is 255668747239. The next prime is 255668747273. The reversal of 255668747265 is 562747866552.

255668747265 is a `hidden beast` number, since 2 + 5 + 566 + 8 + 7 + 4 + 7 + 2 + 65 = 666.

It is not a de Polignac number, because 255668747265 - 2³¹ = 253521263617 is a prime.

It is a super-4 number, since 4×255668747265⁴ (a number of 47 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35540509 + ... + 35547701.

It is an arithmetic number, because the mean of its divisors is an integer number (9259800264).

Almost surely, 2^255668747265 is an apocalyptic number.

It is an amenable number.

255668747265 is a deficient number, since it is larger than the sum of its proper divisors (188801665407).

255668747265 is a wasteful number, since it uses less digits than its factorization.

255668747265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9430 (or 9427 counting only the distinct ones).

The product of its digits is 169344000, while the sum is 63.

The spelling of 255668747265 in words is "two hundred fifty-five billion, six hundred sixty-eight million, seven hundred forty-seven thousand, two hundred sixty-five".