1255521132020 has 24 divisors (see below), whose sum is σ = 2775362503200. Its totient is φ = 475776428832.

The previous prime is 1255521132017. The next prime is 1255521132059. The reversal of 1255521132020 is 202311255521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1652001110 + ... + 1652001869.

It is an arithmetic number, because the mean of its divisors is an integer number (115640104300).

Almost surely, 2^{1255521132020} is an apocalyptic number.

1255521132020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255521132020 is an abundant number, since it is smaller than the sum of its proper divisors (1519841371180).

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

1255521132020 is a wasteful number, since it uses less digits than its factorization.

1255521132020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304003007 (or 3304003005 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 1255521132020 its reverse (202311255521), we get a palindrome (1457832387541).

The spelling of 1255521132020 in words is "one trillion, two hundred fifty-five billion, five hundred twenty-one million, one hundred thirty-two thousand, twenty".