25428336 has 40 divisors (see below), whose sum is σ = 66317184. Its totient is φ = 8395200.

The previous prime is 25428307. The next prime is 25428349. The reversal of 25428336 is 63382452.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25428297 and 25428306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661 + ... + 7611.

Almost surely, 2^25428336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25428336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33158592).

25428336 is an abundant number, since it is smaller than the sum of its proper divisors (40888848).

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

25428336 is a wasteful number, since it uses less digits than its factorization.

25428336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5069 (or 5063 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 25428336 is about 5042.6516833904. The cubic root of 25428336 is about 294.0622756688.

It can be divided in two parts, 2542 and 8336, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 25428336 in words is "twenty-five million, four hundred twenty-eight thousand, three hundred thirty-six".