64025369521 has 8 divisors (see below), whose sum is σ = 64107912704. Its totient is φ = 63942864480.

The previous prime is 64025369509. The next prime is 64025369533. The reversal of 64025369521 is 12596352046.

It is an interprime number because it is at equal distance from previous prime (64025369509) and next prime (64025369533).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64025369521 - 2⁵ = 64025369489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64025369501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4852285 + ... + 4865461.

It is an arithmetic number, because the mean of its divisors is an integer number (8013489088).

Almost surely, 2^64025369521 is an apocalyptic number.

It is an amenable number.

64025369521 is a deficient number, since it is larger than the sum of its proper divisors (82543183).

64025369521 is a wasteful number, since it uses less digits than its factorization.

64025369521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19071.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 64025369521 in words is "sixty-four billion, twenty-five million, three hundred sixty-nine thousand, five hundred twenty-one".