25854816 has 48 divisors (see below), whose sum is σ = 73093104. Its totient is φ = 7954944.

The previous prime is 25854811. The next prime is 25854827. The reversal of 25854816 is 61845852.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25854811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9111 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (1522773).

Almost surely, 2^25854816 is an apocalyptic number.

25854816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25854816 is an abundant number, since it is smaller than the sum of its proper divisors (47238288).

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

25854816 is a wasteful number, since it uses less digits than its factorization.

25854816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20743 (or 20735 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 25854816 is about 5084.7631213263. The cubic root of 25854816 is about 295.6971580015.

The spelling of 25854816 in words is "twenty-five million, eight hundred fifty-four thousand, eight hundred sixteen".