25838428 has 24 divisors (see below), whose sum is σ = 56375424. Its totient is φ = 10066800.

The previous prime is 25838413. The next prime is 25838431. The reversal of 25838428 is 82483852.

It is a super-2 number, since 2×25838428² = 1335248723022368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 41638 + ... + 42253.

It is an arithmetic number, because the mean of its divisors is an integer number (2348976).

Almost surely, 2^25838428 is an apocalyptic number.

25838428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25838428 is an abundant number, since it is smaller than the sum of its proper divisors (30536996).

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

25838428 is a wasteful number, since it uses less digits than its factorization.

25838428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83913 (or 83911 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 25838428 is about 5083.1513847219. The cubic root of 25838428 is about 295.6346692021.

It can be divided in two parts, 2583 and 8428, that added together give a palindrome (11011).

The spelling of 25838428 in words is "twenty-five million, eight hundred thirty-eight thousand, four hundred twenty-eight".