6525446864 has 10 divisors (see below), whose sum is σ = 12643053330. Its totient is φ = 3262723424.

The previous prime is 6525446857. The next prime is 6525446927. The reversal of 6525446864 is 4686445256.

It can be written as a sum of positive squares in only one way, i.e., 6273907264 + 251539600 = 79208^2 + 15860^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203920199 + ... + 203920230.

It is an arithmetic number, because the mean of its divisors is an integer number (1264305333).

Almost surely, 2^6525446864 is an apocalyptic number.

It is an amenable number.

6525446864 is a deficient number, since it is larger than the sum of its proper divisors (6117606466).

6525446864 is a wasteful number, since it uses less digits than its factorization.

6525446864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407840437 (or 407840431 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 50.

The square root of 6525446864 is about 80780.2380783815. The cubic root of 6525446864 is about 1868.6878098430.

The spelling of 6525446864 in words is "six billion, five hundred twenty-five million, four hundred forty-six thousand, eight hundred sixty-four".