6481290625 has 24 divisors (see below), whose sum is σ = 8134354368. Its totient is φ = 5163750000.

The previous prime is 6481290623. The next prime is 6481290671. The reversal of 6481290625 is 5260921846.

It is not a de Polignac number, because 6481290625 - 2¹ = 6481290623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6481290623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 780244 + ... + 788506.

It is an arithmetic number, because the mean of its divisors is an integer number (338931432).

Almost surely, 2^6481290625 is an apocalyptic number.

It is an amenable number.

6481290625 is a deficient number, since it is larger than the sum of its proper divisors (1653063743).

6481290625 is an frugal number, since it uses more digits than its factorization.

6481290625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8539 (or 8519 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 6481290625 is about 80506.4632498534. The cubic root of 6481290625 is about 1864.4632691816.

The spelling of 6481290625 in words is "six billion, four hundred eighty-one million, two hundred ninety thousand, six hundred twenty-five".