6621452325 has 42 divisors (see below), whose sum is σ = 12310303794. Its totient is φ = 3531431520.

The previous prime is 6621452323. The next prime is 6621452351. The reversal of 6621452325 is 5232541266.

6621452325 is a `hidden beast` number, since 6 + 621 + 4 + 5 + 2 + 3 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1910826369 + 4710625956 = 43713^2 + 68634^2 .

It is not a de Polignac number, because 6621452325 - 2¹ = 6621452323 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6621452325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621452323) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 163434 + ... + 199883.

Almost surely, 2^6621452325 is an apocalyptic number.

It is an amenable number.

6621452325 is a deficient number, since it is larger than the sum of its proper divisors (5688851469).

6621452325 is an equidigital number, since it uses as much as digits as its factorization.

6621452325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363345 (or 363325 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 6621452325 is about 81372.3068678774. The cubic root of 6621452325 is about 1877.8075699289.

The spelling of 6621452325 in words is "six billion, six hundred twenty-one million, four hundred fifty-two thousand, three hundred twenty-five".