25808930 has 32 divisors (see below), whose sum is σ = 53270784. Its totient is φ = 8819136.

The previous prime is 25808929. The next prime is 25808947. The reversal of 25808930 is 3980852.

It is a super-2 number, since 2×25808930² = 1332201735489800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34844 + ... + 35576.

It is an arithmetic number, because the mean of its divisors is an integer number (1664712).

Almost surely, 2^25808930 is an apocalyptic number.

25808930 is an abundant number, since it is smaller than the sum of its proper divisors (27461854).

25808930 is a wasteful number, since it uses less digits than its factorization.

25808930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 25808930 is about 5080.2490096451. The cubic root of 25808930 is about 295.5221242727.

The spelling of 25808930 in words is "twenty-five million, eight hundred eight thousand, nine hundred thirty".