25429248 has 144 divisors (see below), whose sum is σ = 81269440. Its totient is φ = 7796736.

The previous prime is 25429219. The next prime is 25429267. The reversal of 25429248 is 84292452.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-4 number, since 4×25429248⁴ (a number of 31 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89715 + ... + 89997.

Almost surely, 2^25429248 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 25429248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40634720).

25429248 is an abundant number, since it is smaller than the sum of its proper divisors (55840192).

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

25429248 is a wasteful number, since it uses less digits than its factorization.

25429248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 301 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 25429248 is about 5042.7421111931. The cubic root of 25429248 is about 294.0657911904.

The spelling of 25429248 in words is "twenty-five million, four hundred twenty-nine thousand, two hundred forty-eight".