6451779125 has 32 divisors (see below), whose sum is σ = 8988160896. Its totient is φ = 4583040000.

The previous prime is 6451779091. The next prime is 6451779127. The reversal of 6451779125 is 5219771546.

It is not a de Polignac number, because 6451779125 - 2¹⁰ = 6451778101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6451779125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6451779127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4565 + ... + 113685.

It is an arithmetic number, because the mean of its divisors is an integer number (280880028).

Almost surely, 2^6451779125 is an apocalyptic number.

It is an amenable number.

6451779125 is a deficient number, since it is larger than the sum of its proper divisors (2536381771).

6451779125 is a wasteful number, since it uses less digits than its factorization.

6451779125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109190 (or 109180 counting only the distinct ones).

The product of its digits is 529200, while the sum is 47.

The square root of 6451779125 is about 80322.9676057851. The cubic root of 6451779125 is about 1861.6291200502.

The spelling of 6451779125 in words is "six billion, four hundred fifty-one million, seven hundred seventy-nine thousand, one hundred twenty-five".