1255327820 has 24 divisors (see below), whose sum is σ = 2649444000. Its totient is φ = 499606272.

The previous prime is 1255327819. The next prime is 1255327907. The reversal of 1255327820 is 287235521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153725 + ... + 161684.

It is an arithmetic number, because the mean of its divisors is an integer number (110393500).

Almost surely, 2^1255327820 is an apocalyptic number.

1255327820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255327820 is an abundant number, since it is smaller than the sum of its proper divisors (1394116180).

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

1255327820 is a wasteful number, since it uses less digits than its factorization.

1255327820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315617 (or 315615 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 1255327820 is about 35430.6056962056. The cubic root of 1255327820 is about 1078.7456344453.

The spelling of 1255327820 in words is "one billion, two hundred fifty-five million, three hundred twenty-seven thousand, eight hundred twenty".