25808934 has 16 divisors (see below), whose sum is σ = 52130160. Its totient is φ = 8517600.

The previous prime is 25808929. The next prime is 25808947. The reversal of 25808934 is 43980852.

It is a happy number.

It is a super-2 number, since 2×25808934² = 1332202148432712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25808892 and 25808901.

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, 20689 + ... + 21900.

It is an arithmetic number, because the mean of its divisors is an integer number (3258135).

Almost surely, 2^25808934 is an apocalyptic number.

25808934 is an abundant number, since it is smaller than the sum of its proper divisors (26321226).

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

25808934 is a wasteful number, since it uses less digits than its factorization.

25808934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42695.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 25808934 is about 5080.2494033266. The cubic root of 25808934 is about 295.5221395398.

It can be divided in two parts, 2 and 5808934, that added together give a triangular number (5808936 = T₃₄₀₈).

The spelling of 25808934 in words is "twenty-five million, eight hundred eight thousand, nine hundred thirty-four".