255660600405 has 64 divisors (see below), whose sum is σ = 473463244800. Its totient is φ = 115390344960.

The previous prime is 255660600367. The next prime is 255660600427. The reversal of 255660600405 is 504006066552.

It is a happy number.

It is not a de Polignac number, because 255660600405 - 2¹⁴ = 255660584021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2593306 + ... + 2690084.

It is an arithmetic number, because the mean of its divisors is an integer number (7397863200).

Almost surely, 2^255660600405 is an apocalyptic number.

It is an amenable number.

255660600405 is a deficient number, since it is larger than the sum of its proper divisors (217802644395).

255660600405 is a wasteful number, since it uses less digits than its factorization.

255660600405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97114.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 255660600405 its reverse (504006066552), we get a palindrome (759666666957).

The spelling of 255660600405 in words is "two hundred fifty-five billion, six hundred sixty million, six hundred thousand, four hundred five".