25830393 has 16 divisors (see below), whose sum is σ = 35377920. Its totient is φ = 16758144.

The previous prime is 25830383. The next prime is 25830407. The reversal of 25830393 is 39303852.

It is not a de Polignac number, because 25830393 - 2¹⁷ = 25699321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25830323) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16555 + ... + 18047.

It is an arithmetic number, because the mean of its divisors is an integer number (2211120).

Almost surely, 2^25830393 is an apocalyptic number.

It is an amenable number.

25830393 is a deficient number, since it is larger than the sum of its proper divisors (9547527).

25830393 is a wasteful number, since it uses less digits than its factorization.

25830393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 25830393 is about 5082.3609671097. The cubic root of 25830393 is about 295.6040214289.

The spelling of 25830393 in words is "twenty-five million, eight hundred thirty thousand, three hundred ninety-three".