25444216 has 16 divisors (see below), whose sum is σ = 54523440. Its totient is φ = 10904640.

The previous prime is 25444213. The next prime is 25444219. The reversal of 25444216 is 61244452.

It is an interprime number because it is at equal distance from previous prime (25444213) and next prime (25444219).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25444213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227125 + ... + 227236.

It is an arithmetic number, because the mean of its divisors is an integer number (3407715).

Almost surely, 2^25444216 is an apocalyptic number.

It is an amenable number.

25444216 is an abundant number, since it is smaller than the sum of its proper divisors (29079224).

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

25444216 is a wasteful number, since it uses less digits than its factorization.

25444216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454374 (or 454370 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 25444216 is about 5044.2260060390. The cubic root of 25444216 is about 294.1234769103.

Adding to 25444216 its reverse (61244452), we get a palindrome (86688668).

The spelling of 25444216 in words is "twenty-five million, four hundred forty-four thousand, two hundred sixteen".