255566661250 has 40 divisors (see below), whose sum is σ = 479124193680. Its totient is φ = 102207450000.

The previous prime is 255566661247. The next prime is 255566661313. The reversal of 255566661250 is 52166665552.

It is a junction number, because it is equal to n+sod(n) for n = 255566661194 and 255566661203.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7957725 + ... + 7989775.

It is an arithmetic number, because the mean of its divisors is an integer number (11978104842).

Almost surely, 2^255566661250 is an apocalyptic number.

255566661250 is a deficient number, since it is larger than the sum of its proper divisors (223557532430).

255566661250 is an equidigital number, since it uses as much as digits as its factorization.

255566661250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38452 (or 38437 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 49.

The spelling of 255566661250 in words is "two hundred fifty-five billion, five hundred sixty-six million, six hundred sixty-one thousand, two hundred fifty".