6651290825 has 6 divisors (see below), whose sum is σ = 8247600654. Its totient is φ = 5321032640.

The previous prime is 6651290801. The next prime is 6651290827. The reversal of 6651290825 is 5280921566.

It can be written as a sum of positive squares in 3 ways, for example, as 11648569 + 6639642256 = 3413^2 + 81484^2 .

It is not a de Polignac number, because 6651290825 - 2⁶ = 6651290761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6651290827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133025792 + ... + 133025841.

It is an arithmetic number, because the mean of its divisors is an integer number (1374600109).

Almost surely, 2^6651290825 is an apocalyptic number.

It is an amenable number.

6651290825 is a deficient number, since it is larger than the sum of its proper divisors (1596309829).

6651290825 is a wasteful number, since it uses less digits than its factorization.

6651290825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266051643 (or 266051638 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 6651290825 is about 81555.4463233450. The cubic root of 6651290825 is about 1880.6240218540.

The spelling of 6651290825 in words is "six billion, six hundred fifty-one million, two hundred ninety thousand, eight hundred twenty-five".