25639130 has 16 divisors (see below), whose sum is σ = 50346144. Its totient is φ = 9323280.

The previous prime is 25639129. The next prime is 25639147. The reversal of 25639130 is 3193652.

It is a junction number, because it is equal to n+sod(n) for n = 25639093 and 25639102.

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 in 7 ways as a sum of consecutive naturals, for example, 116432 + ... + 116651.

It is an arithmetic number, because the mean of its divisors is an integer number (3146634).

Almost surely, 2^25639130 is an apocalyptic number.

25639130 is a deficient number, since it is larger than the sum of its proper divisors (24707014).

25639130 is a wasteful number, since it uses less digits than its factorization.

25639130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233101.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 25639130 is about 5063.5096524051. The cubic root of 25639130 is about 294.8726061064.

The spelling of 25639130 in words is "twenty-five million, six hundred thirty-nine thousand, one hundred thirty".