66331004025 has 192 divisors, whose sum is σ = 136521262080. Its totient is φ = 27937612800.

The previous prime is 66331004023. The next prime is 66331004041. The reversal of 66331004025 is 52040013366.

It is not a de Polignac number, because 66331004025 - 2¹ = 66331004023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66331003983 and 66331004001.

It is not an unprimeable number, because it can be changed into a prime (66331004021) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 33214327 + ... + 33216323.

It is an arithmetic number, because the mean of its divisors is an integer number (711048240).

Almost surely, 2^66331004025 is an apocalyptic number.

66331004025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66331004025 is an abundant number, since it is smaller than the sum of its proper divisors (70190258055).

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

66331004025 is a wasteful number, since it uses less digits than its factorization.

66331004025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216 (or 2211 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 66331004025 in words is "sixty-six billion, three hundred thirty-one million, four thousand, twenty-five".