25379638 has 8 divisors (see below), whose sum is σ = 39297600. Its totient is φ = 12280440.

The previous prime is 25379609. The next prime is 25379647. The reversal of 25379638 is 83697352.

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

It is a super-2 number, since 2×25379638² = 1288252050022088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25379594 and 25379603.

It is a congruent number.

It is an unprimeable number.

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, 204613 + ... + 204736.

It is an arithmetic number, because the mean of its divisors is an integer number (4912200).

Almost surely, 2^25379638 is an apocalyptic number.

25379638 is a deficient number, since it is larger than the sum of its proper divisors (13917962).

25379638 is a wasteful number, since it uses less digits than its factorization.

25379638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409382.

The product of its digits is 272160, while the sum is 43.

The square root of 25379638 is about 5037.8207590187. The cubic root of 25379638 is about 293.8744354048.

The spelling of 25379638 in words is "twenty-five million, three hundred seventy-nine thousand, six hundred thirty-eight".