158425138 has 8 divisors (see below), whose sum is σ = 237709980. Its totient is φ = 79188480.

The previous prime is 158425117. The next prime is 158425139. The reversal of 158425138 is 831524851.

It can be written as a sum of positive squares in 2 ways, for example, as 156075049 + 2350089 = 12493^2 + 1533^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 158425097 and 158425106.

It is not an unprimeable number, because it can be changed into a prime (158425139) 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, 2223 + ... + 17938.

Almost surely, 2^158425138 is an apocalyptic number.

158425138 is a deficient number, since it is larger than the sum of its proper divisors (79284842).

158425138 is a wasteful number, since it uses less digits than its factorization.

158425138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24092.

The product of its digits is 38400, while the sum is 37.

The square root of 158425138 is about 12586.7048110298. The cubic root of 158425138 is about 541.0964666830.

Adding to 158425138 its reverse (831524851), we get a palindrome (989949989).

The spelling of 158425138 in words is "one hundred fifty-eight million, four hundred twenty-five thousand, one hundred thirty-eight".