1255894660 has 24 divisors (see below), whose sum is σ = 2638089216. Its totient is φ = 502222560.

The previous prime is 1255894649. The next prime is 1255894687. The reversal of 1255894660 is 664985521.

It is a self number, because there is not a number n which added to its sum of digits gives 1255894660.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104355 + ... + 115765.

It is an arithmetic number, because the mean of its divisors is an integer number (109920384).

Almost surely, 2^1255894660 is an apocalyptic number.

1255894660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255894660 is an abundant number, since it is smaller than the sum of its proper divisors (1382194556).

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

1255894660 is a wasteful number, since it uses less digits than its factorization.

1255894660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16923 (or 16921 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 1255894660 is about 35438.6040921479. The cubic root of 1255894660 is about 1078.9079782708.

The spelling of 1255894660 in words is "one billion, two hundred fifty-five million, eight hundred ninety-four thousand, six hundred sixty".