66467145025 has 24 divisors (see below), whose sum is σ = 86447859840. Its totient is φ = 50635776960.

The previous prime is 66467145023. The next prime is 66467145077. The reversal of 66467145025 is 52054176466.

It is not a de Polignac number, because 66467145025 - 2¹ = 66467145023 is a prime.

It is a super-3 number, since 3×66467145025³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66467145023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 720955 + ... + 807904.

It is an arithmetic number, because the mean of its divisors is an integer number (3601994160).

Almost surely, 2^66467145025 is an apocalyptic number.

It is an amenable number.

66467145025 is a deficient number, since it is larger than the sum of its proper divisors (19980714815).

66467145025 is a wasteful number, since it uses less digits than its factorization.

66467145025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528953 (or 1528948 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 66467145025 in words is "sixty-six billion, four hundred sixty-seven million, one hundred forty-five thousand, twenty-five".