66140024225 has 48 divisors (see below), whose sum is σ = 90533776896. Its totient is φ = 47531520000.

The previous prime is 66140024219. The next prime is 66140024231. The reversal of 66140024225 is 52242004166.

It is an interprime number because it is at equal distance from previous prime (66140024219) and next prime (66140024231).

It is not a de Polignac number, because 66140024225 - 2⁸ = 66140023969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66140024191 and 66140024200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16024112 + ... + 16028238.

It is an arithmetic number, because the mean of its divisors is an integer number (1886120352).

Almost surely, 2^66140024225 is an apocalyptic number.

It is an amenable number.

66140024225 is a deficient number, since it is larger than the sum of its proper divisors (24393752671).

66140024225 is a wasteful number, since it uses less digits than its factorization.

66140024225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826 (or 4821 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 66140024225 in words is "sixty-six billion, one hundred forty million, twenty-four thousand, two hundred twenty-five".