25804942 has 8 divisors (see below), whose sum is σ = 40390416. Its totient is φ = 12341472.

The previous prime is 25804931. The next prime is 25804951. The reversal of 25804942 is 24940852.

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

It is a junction number, because it is equal to n+sod(n) for n = 25804898 and 25804907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280443 + ... + 280534.

It is an arithmetic number, because the mean of its divisors is an integer number (5048802).

Almost surely, 2^25804942 is an apocalyptic number.

25804942 is a deficient number, since it is larger than the sum of its proper divisors (14585474).

25804942 is a wasteful number, since it uses less digits than its factorization.

25804942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561002.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 25804942 is about 5079.8564940360. The cubic root of 25804942 is about 295.5069021133.

The spelling of 25804942 in words is "twenty-five million, eight hundred four thousand, nine hundred forty-two".