25957830 has 16 divisors (see below), whose sum is σ = 62298864. Its totient is φ = 6922080.

The previous prime is 25957787. The next prime is 25957847. The reversal of 25957830 is 3875952.

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 7 ways as a sum of consecutive naturals, for example, 432601 + ... + 432660.

It is an arithmetic number, because the mean of its divisors is an integer number (3893679).

Almost surely, 2^25957830 is an apocalyptic number.

25957830 is an abundant number, since it is smaller than the sum of its proper divisors (36341034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25957830 is a wasteful number, since it uses less digits than its factorization.

25957830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865271.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 25957830 is about 5094.8827268152. The cubic root of 25957830 is about 296.0893554797.

The spelling of 25957830 in words is "twenty-five million, nine hundred fifty-seven thousand, eight hundred thirty".