6555125550 has 24 divisors (see below), whose sum is σ = 16256711736. Its totient is φ = 1748033440.

The previous prime is 6555125543. The next prime is 6555125561. The reversal of 6555125550 is 555215556.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6555125499 and 6555125508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21850269 + ... + 21850568.

It is an arithmetic number, because the mean of its divisors is an integer number (677362989).

Almost surely, 2^6555125550 is an apocalyptic number.

6555125550 is an abundant number, since it is smaller than the sum of its proper divisors (9701586186).

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

6555125550 is a wasteful number, since it uses less digits than its factorization.

6555125550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43700852 (or 43700847 counting only the distinct ones).

The product of its (nonzero) digits is 187500, while the sum is 39.

The square root of 6555125550 is about 80963.7298424424. The cubic root of 6555125550 is about 1871.5165474166.

The spelling of 6555125550 in words is "six billion, five hundred fifty-five million, one hundred twenty-five thousand, five hundred fifty".