66250011625 has 16 divisors (see below), whose sum is σ = 94491446400. Its totient is φ = 45428578800.

The previous prime is 66250011593. The next prime is 66250011677. The reversal of 66250011625 is 52611005266.

It is not a de Polignac number, because 66250011625 - 2⁵ = 66250011593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37856275 + ... + 37858024.

It is an arithmetic number, because the mean of its divisors is an integer number (5905715400).

Almost surely, 2^66250011625 is an apocalyptic number.

It is an amenable number.

66250011625 is a deficient number, since it is larger than the sum of its proper divisors (28241434775).

66250011625 is an equidigital number, since it uses as much as digits as its factorization.

66250011625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75714321 (or 75714311 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 66250011625 in words is "sixty-six billion, two hundred fifty million, eleven thousand, six hundred twenty-five".