25444428 has 24 divisors (see below), whose sum is σ = 61286400. Its totient is φ = 8207760.

The previous prime is 25444423. The next prime is 25444429. The reversal of 25444428 is 82444452.

It is not an unprimeable number, because it can be changed into a prime (25444421) by changing a digit.

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, 33828 + ... + 34571.

It is an arithmetic number, because the mean of its divisors is an integer number (2553600).

Almost surely, 2^25444428 is an apocalyptic number.

It is an amenable number.

25444428 is an abundant number, since it is smaller than the sum of its proper divisors (35841972).

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

25444428 is a wasteful number, since it uses less digits than its factorization.

25444428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68437 (or 68435 counting only the distinct ones).

The product of its digits is 40960, while the sum is 33.

The square root of 25444428 is about 5044.2470201210. The cubic root of 25444428 is about 294.1242937823.

The spelling of 25444428 in words is "twenty-five million, four hundred forty-four thousand, four hundred twenty-eight".