25761216 has 56 divisors (see below), whose sum is σ = 73410064. Its totient is φ = 7925760.

The previous prime is 25761209. The next prime is 25761221. The reversal of 25761216 is 61216752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2665 + ... + 7656.

It is an arithmetic number, because the mean of its divisors is an integer number (1310894).

Almost surely, 2^25761216 is an apocalyptic number.

25761216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25761216 is an abundant number, since it is smaller than the sum of its proper divisors (47648848).

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

25761216 is a wasteful number, since it uses less digits than its factorization.

25761216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10349 (or 10339 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 25761216 is about 5075.5508075479. The cubic root of 25761216 is about 295.3398974106.

Adding to 25761216 its reverse (61216752), we get a palindrome (86977968).

The spelling of 25761216 in words is "twenty-five million, seven hundred sixty-one thousand, two hundred sixteen".