25827638 has 4 divisors (see below), whose sum is σ = 38741460. Its totient is φ = 12913818.

The previous prime is 25827623. The next prime is 25827647. The reversal of 25827638 is 83672852.

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

It is a junction number, because it is equal to n+sod(n) for n = 25827595 and 25827604.

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 as a sum of consecutive naturals, namely, 6456908 + ... + 6456911.

It is an arithmetic number, because the mean of its divisors is an integer number (9685365).

Almost surely, 2^25827638 is an apocalyptic number.

25827638 is a deficient number, since it is larger than the sum of its proper divisors (12913822).

25827638 is a wasteful number, since it uses less digits than its factorization.

25827638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12913821.

The product of its digits is 161280, while the sum is 41.

The square root of 25827638 is about 5082.0899244307. The cubic root of 25827638 is about 295.5935116129.

The spelling of 25827638 in words is "twenty-five million, eight hundred twenty-seven thousand, six hundred thirty-eight".