25692216 has 64 divisors (see below), whose sum is σ = 70519680. Its totient is φ = 7735680.

The previous prime is 25692209. The next prime is 25692239. The reversal of 25692216 is 61229652.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 80890 + ... + 81206.

It is an arithmetic number, because the mean of its divisors is an integer number (1101870).

Almost surely, 2^25692216 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 25692216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35259840).

25692216 is an abundant number, since it is smaller than the sum of its proper divisors (44827464).

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

25692216 is a wasteful number, since it uses less digits than its factorization.

25692216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 640 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 25692216 is about 5068.7489580763. The cubic root of 25692216 is about 295.0759777489.

The spelling of 25692216 in words is "twenty-five million, six hundred ninety-two thousand, two hundred sixteen".