6425138 has 8 divisors (see below), whose sum is σ = 9691500. Its totient is φ = 3194640.

The previous prime is 6425117. The next prime is 6425143. The reversal of 6425138 is 8315246.

It can be written as a sum of positive squares in 2 ways, for example, as 4313929 + 2111209 = 2077^2 + 1453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6425138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8513 + ... + 9236.

Almost surely, 2^6425138 is an apocalyptic number.

6425138 is a deficient number, since it is larger than the sum of its proper divisors (3266362).

6425138 is a wasteful number, since it uses less digits than its factorization.

6425138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17932.

The product of its digits is 5760, while the sum is 29.

The square root of 6425138 is about 2534.7855925107. The cubic root of 6425138 is about 185.9063196498.

It can be divided in two parts, 642 and 5138, that multiplied together give a triangular number (3298596 = T₂₅₆₈).

The spelling of 6425138 in words is "six million, four hundred twenty-five thousand, one hundred thirty-eight".