25450216 has 32 divisors (see below), whose sum is σ = 52462080. Its totient is φ = 11478400.

The previous prime is 25450211. The next prime is 25450219. The reversal of 25450216 is 61205452.

It is not an unprimeable number, because it can be changed into a prime (25450211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11001 + ... + 13111.

It is an arithmetic number, because the mean of its divisors is an integer number (1639440).

Almost surely, 2^25450216 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 25450216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26231040).

25450216 is an abundant number, since it is smaller than the sum of its proper divisors (27011864).

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

25450216 is a wasteful number, since it uses less digits than its factorization.

25450216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265 (or 2261 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 25450216 is about 5044.8207103920. The cubic root of 25450216 is about 294.1465941768.

Adding to 25450216 its reverse (61205452), we get a palindrome (86655668).

It can be divided in two parts, 25 and 450216, that added together give a square (450241 = 671²).

The spelling of 25450216 in words is "twenty-five million, four hundred fifty thousand, two hundred sixteen".