55025681520 has 80 divisors (see below), whose sum is σ = 170671888800. Its totient is φ = 14665577472.

The previous prime is 55025681467. The next prime is 55025681527. The reversal of 55025681520 is 2518652055.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55025681527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389406 + ... + 511554.

It is an arithmetic number, because the mean of its divisors is an integer number (2133398610).

Almost surely, 2^55025681520 is an apocalyptic number.

It is an amenable number.

55025681520 is an abundant number, since it is smaller than the sum of its proper divisors (115646207280).

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

55025681520 is a wasteful number, since it uses less digits than its factorization.

55025681520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124042 (or 124036 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 39.

The spelling of 55025681520 in words is "fifty-five billion, twenty-five million, six hundred eighty-one thousand, five hundred twenty".