6437746325 has 12 divisors (see below), whose sum is σ = 8113673028. Its totient is φ = 5065766400.

The previous prime is 6437746297. The next prime is 6437746327. The reversal of 6437746325 is 5236477346.

It can be written as a sum of positive squares in 6 ways, for example, as 896283844 + 5541462481 = 29938^2 + 74441^2 .

It is not a de Polignac number, because 6437746325 - 2¹² = 6437742229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6437746325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6437746327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2109212 + ... + 2112261.

It is an arithmetic number, because the mean of its divisors is an integer number (676139419).

Almost surely, 2^6437746325 is an apocalyptic number.

It is an amenable number.

6437746325 is a deficient number, since it is larger than the sum of its proper divisors (1675926703).

6437746325 is a wasteful number, since it uses less digits than its factorization.

6437746325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221544 (or 4221539 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 47.

The square root of 6437746325 is about 80235.5677053512. The cubic root of 6437746325 is about 1860.2784418586.

The spelling of 6437746325 in words is "six billion, four hundred thirty-seven million, seven hundred forty-six thousand, three hundred twenty-five".