1255305660 has 96 divisors (see below), whose sum is σ = 4125596160. Its totient is φ = 279168768.

The previous prime is 1255305581. The next prime is 1255305677. The reversal of 1255305660 is 665035521.

1255305660 = 12523² + 12524² + ... + 12530².

1255305660 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24850 + ... + 55929.

It is an arithmetic number, because the mean of its divisors is an integer number (42974960).

Almost surely, 2^1255305660 is an apocalyptic number.

1255305660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255305660 is an abundant number, since it is smaller than the sum of its proper divisors (2870290500).

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

1255305660 is a wasteful number, since it uses less digits than its factorization.

1255305660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80835 (or 80833 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 1255305660 is about 35430.2929708463. The cubic root of 1255305660 is about 1078.7392867955.

The spelling of 1255305660 in words is "one billion, two hundred fifty-five million, three hundred five thousand, six hundred sixty".