7666021325 has 12 divisors (see below), whose sum is σ = 9919165728. Its totient is φ = 5866172400.

The previous prime is 7666021249. The next prime is 7666021351. The reversal of 7666021325 is 5231206667.

It is not a de Polignac number, because 7666021325 - 2¹⁸ = 7665759181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6665531 + ... + 6666680.

It is an arithmetic number, because the mean of its divisors is an integer number (826597144).

Almost surely, 2^7666021325 is an apocalyptic number.

It is an amenable number.

7666021325 is a deficient number, since it is larger than the sum of its proper divisors (2253144403).

7666021325 is a wasteful number, since it uses less digits than its factorization.

7666021325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13332244 (or 13332239 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 7666021325 is about 87555.8183389317. The cubic root of 7666021325 is about 1971.7719054954.

The spelling of 7666021325 in words is "seven billion, six hundred sixty-six million, twenty-one thousand, three hundred twenty-five".