25958138 has 4 divisors (see below), whose sum is σ = 38937210. Its totient is φ = 12979068.

The previous prime is 25958117. The next prime is 25958173. The reversal of 25958138 is 83185952.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25230529 + 727609 = 5023^2 + 853^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25958095 and 25958104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6489533 + ... + 6489536.

Almost surely, 2^25958138 is an apocalyptic number.

25958138 is a deficient number, since it is larger than the sum of its proper divisors (12979072).

25958138 is a wasteful number, since it uses less digits than its factorization.

25958138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12979071.

The product of its digits is 86400, while the sum is 41.

The square root of 25958138 is about 5094.9129531328. The cubic root of 25958138 is about 296.0905265478.

The spelling of 25958138 in words is "twenty-five million, nine hundred fifty-eight thousand, one hundred thirty-eight".