25940638 has 16 divisors (see below), whose sum is σ = 40054176. Its totient is φ = 12594400.

The previous prime is 25940581. The next prime is 25940641. The reversal of 25940638 is 83604952.

It is a junction number, because it is equal to n+sod(n) for n = 25940597 and 25940606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9495 + ... + 11917.

It is an arithmetic number, because the mean of its divisors is an integer number (2503386).

Almost surely, 2^25940638 is an apocalyptic number.

25940638 is a deficient number, since it is larger than the sum of its proper divisors (14113538).

25940638 is a wasteful number, since it uses less digits than its factorization.

25940638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 25940638 is about 5093.1952642717. The cubic root of 25940638 is about 296.0239738922.

The spelling of 25940638 in words is "twenty-five million, nine hundred forty thousand, six hundred thirty-eight".