6464581325 has 24 divisors (see below), whose sum is σ = 8211706560. Its totient is φ = 5046742400.

The previous prime is 6464581309. The next prime is 6464581367. The reversal of 6464581325 is 5231854646.

It is not a de Polignac number, because 6464581325 - 2⁴ = 6464581309 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186080 + ... + 218070.

It is an arithmetic number, because the mean of its divisors is an integer number (342154440).

Almost surely, 2^6464581325 is an apocalyptic number.

It is an amenable number.

6464581325 is a deficient number, since it is larger than the sum of its proper divisors (1747125235).

6464581325 is a wasteful number, since it uses less digits than its factorization.

6464581325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32197 (or 32192 counting only the distinct ones).

The product of its digits is 691200, while the sum is 44.

The square root of 6464581325 is about 80402.6201376547. The cubic root of 6464581325 is about 1862.8596437754.

The spelling of 6464581325 in words is "six billion, four hundred sixty-four million, five hundred eighty-one thousand, three hundred twenty-five".