6537897425 has 6 divisors (see below), whose sum is σ = 8106992838. Its totient is φ = 5230317920.

The previous prime is 6537897409. The next prime is 6537897449. The reversal of 6537897425 is 5247987356.

It can be written as a sum of positive squares in 3 ways, for example, as 1964351041 + 4573546384 = 44321^2 + 67628^2 .

It is not a de Polignac number, because 6537897425 - 2⁴ = 6537897409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130757924 + ... + 130757973.

It is an arithmetic number, because the mean of its divisors is an integer number (1351165473).

Almost surely, 2^6537897425 is an apocalyptic number.

It is an amenable number.

6537897425 is a deficient number, since it is larger than the sum of its proper divisors (1569095413).

6537897425 is a wasteful number, since it uses less digits than its factorization.

6537897425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261515907 (or 261515902 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 56.

The square root of 6537897425 is about 80857.2657526830. The cubic root of 6537897425 is about 1869.8755410128.

The spelling of 6537897425 in words is "six billion, five hundred thirty-seven million, eight hundred ninety-seven thousand, four hundred twenty-five".