55625523540 has 144 divisors (see below), whose sum is σ = 168576774912. Its totient is φ = 13697275904.

The previous prime is 55625523311. The next prime is 55625523563. The reversal of 55625523540 is 4532552655.

It is a junction number, because it is equal to n+sod(n) for n = 55625523492 and 55625523501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 888757 + ... + 949283.

It is an arithmetic number, because the mean of its divisors is an integer number (1170672048).

Almost surely, 2^55625523540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55625523540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84288387456).

55625523540 is an abundant number, since it is smaller than the sum of its proper divisors (112951251372).

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

55625523540 is a wasteful number, since it uses less digits than its factorization.

55625523540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60626 (or 60607 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 42.

The spelling of 55625523540 in words is "fifty-five billion, six hundred twenty-five million, five hundred twenty-three thousand, five hundred forty".