25444416 has 28 divisors (see below), whose sum is σ = 67322192. Its totient is φ = 8481408.

The previous prime is 25444409. The next prime is 25444421. The reversal of 25444416 is 61444452.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 66070 + ... + 66453.

It is an arithmetic number, because the mean of its divisors is an integer number (2404364).

Almost surely, 2^25444416 is an apocalyptic number.

It is an amenable number.

25444416 is an abundant number, since it is smaller than the sum of its proper divisors (41877776).

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

25444416 is a wasteful number, since it uses less digits than its factorization.

25444416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132538 (or 132528 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 25444416 is about 5044.2458306470. The cubic root of 25444416 is about 294.1242475444.

Adding to 25444416 its reverse (61444452), we get a palindrome (86888868).

The spelling of 25444416 in words is "twenty-five million, four hundred forty-four thousand, four hundred sixteen".