64033218625 has 8 divisors (see below), whose sum is σ = 79913457000. Its totient is φ = 51226574800.

The previous prime is 64033218611. The next prime is 64033218631. The reversal of 64033218625 is 52681233046.

It can be written as a sum of positive squares in 4 ways, for example, as 15926692401 + 48106526224 = 126201^2 + 219332^2 .

It is not a de Polignac number, because 64033218625 - 2⁵ = 64033218593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256132750 + ... + 256132999.

It is an arithmetic number, because the mean of its divisors is an integer number (9989182125).

Almost surely, 2^64033218625 is an apocalyptic number.

It is an amenable number.

64033218625 is a deficient number, since it is larger than the sum of its proper divisors (15880238375).

64033218625 is an equidigital number, since it uses as much as digits as its factorization.

64033218625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512265764 (or 512265754 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 64033218625 in words is "sixty-four billion, thirty-three million, two hundred eighteen thousand, six hundred twenty-five".