25670138 has 8 divisors (see below), whose sum is σ = 41467188. Its totient is φ = 11847744.

The previous prime is 25670137. The next prime is 25670143. The reversal of 25670138 is 83107652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25170289 + 499849 = 5017^2 + 707^2 .

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

It is not an unprimeable number, because it can be changed into a prime (25670137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493631 + ... + 493682.

Almost surely, 2^25670138 is an apocalyptic number.

25670138 is a deficient number, since it is larger than the sum of its proper divisors (15797050).

25670138 is a wasteful number, since it uses less digits than its factorization.

25670138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987328.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 25670138 is about 5066.5706350548. The cubic root of 25670138 is about 294.9914313321.

The spelling of 25670138 in words is "twenty-five million, six hundred seventy thousand, one hundred thirty-eight".