6651555005125 has 48 divisors (see below), whose sum is σ = 8891803432512. Its totient is φ = 4965934802400.

The previous prime is 6651555005119. The next prime is 6651555005131. The reversal of 6651555005125 is 5215005551566.

It is an interprime number because it is at equal distance from previous prime (6651555005119) and next prime (6651555005131).

It is not a de Polignac number, because 6651555005125 - 2¹⁵ = 6651554972357 is a prime.

It is a super-4 number, since 4×6651555005125⁴ (a number of 52 digits) contains 4444 as substring.

It is a Duffinian number.

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, 1923354 + ... + 4123396.

It is an arithmetic number, because the mean of its divisors is an integer number (185245904844).

Almost surely, 2^{6651555005125} is an apocalyptic number.

It is an amenable number.

6651555005125 is a deficient number, since it is larger than the sum of its proper divisors (2240248427387).

6651555005125 is a wasteful number, since it uses less digits than its factorization.

6651555005125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200163 (or 2200134 counting only the distinct ones).

The product of its (nonzero) digits is 1125000, while the sum is 46.

The spelling of 6651555005125 in words is "six trillion, six hundred fifty-one billion, five hundred fifty-five million, five thousand, one hundred twenty-five".