6453776125 has 16 divisors (see below), whose sum is σ = 8056741680. Its totient is φ = 5161464000.

The previous prime is 6453776123. The next prime is 6453776141. The reversal of 6453776125 is 5216773546.

It can be written as a sum of positive squares in 8 ways, for example, as 4419856324 + 2033919801 = 66482^2 + 45099^2 .

It is not a de Polignac number, because 6453776125 - 2¹ = 6453776123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6453776123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593235 + ... + 604015.

It is an arithmetic number, because the mean of its divisors is an integer number (503546355).

Almost surely, 2^6453776125 is an apocalyptic number.

It is an amenable number.

6453776125 is a deficient number, since it is larger than the sum of its proper divisors (1602965555).

6453776125 is a wasteful number, since it uses less digits than its factorization.

6453776125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15585 (or 15575 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 46.

The square root of 6453776125 is about 80335.3977086066. The cubic root of 6453776125 is about 1861.8211750774.

The spelling of 6453776125 in words is "six billion, four hundred fifty-three million, seven hundred seventy-six thousand, one hundred twenty-five".