25789816 has 64 divisors (see below), whose sum is σ = 57153600. Its totient is φ = 10795008.

The previous prime is 25789789. The next prime is 25789823. The reversal of 25789816 is 61898752.

It is a super-2 number, since 2×25789816² = 1330229218627712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 51021 + ... + 51523.

It is an arithmetic number, because the mean of its divisors is an integer number (893025).

Almost surely, 2^25789816 is an apocalyptic number.

25789816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25789816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28576800).

25789816 is an abundant number, since it is smaller than the sum of its proper divisors (31363784).

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

25789816 is a wasteful number, since it uses less digits than its factorization.

25789816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 564 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 25789816 is about 5078.3674542120. The cubic root of 25789816 is about 295.4491520507.

The spelling of 25789816 in words is "twenty-five million, seven hundred eighty-nine thousand, eight hundred sixteen".