6425437 has 4 divisors (see below), whose sum is σ = 6472476. Its totient is φ = 6378400.

The previous prime is 6425423. The next prime is 6425467. The reversal of 6425437 is 7345246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7345246 = 2 ⋅3672623.

It can be written as a sum of positive squares in 2 ways, for example, as 5112121 + 1313316 = 2261^2 + 1146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6425437 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 6⁸ + 4² + 2⁷ + 5⁵ + 4¹¹ + 3¹² + 7⁵ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6425399 and 6425408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425467) 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 3 ways as a sum of consecutive naturals, for example, 23314 + ... + 23587.

It is an arithmetic number, because the mean of its divisors is an integer number (1618119).

Almost surely, 2^6425437 is an apocalyptic number.

It is an amenable number.

6425437 is a deficient number, since it is larger than the sum of its proper divisors (47039).

6425437 is a wasteful number, since it uses less digits than its factorization.

6425437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47038.

The product of its digits is 20160, while the sum is 31.

The square root of 6425437 is about 2534.8445711720. The cubic root of 6425437 is about 185.9092033817.

The spelling of 6425437 in words is "six million, four hundred twenty-five thousand, four hundred thirty-seven".