25683920 has 40 divisors (see below), whose sum is σ = 61336104. Its totient is φ = 9994752.

The previous prime is 25683919. The next prime is 25683929. The reversal of 25683920 is 2938652.

It can be written as a sum of positive squares in 4 ways, for example, as 4376464 + 21307456 = 2092^2 + 4616^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25683929) 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, 1379 + ... + 7298.

Almost surely, 2^25683920 is an apocalyptic number.

25683920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25683920 is an abundant number, since it is smaller than the sum of its proper divisors (35652184).

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

25683920 is a wasteful number, since it uses less digits than its factorization.

25683920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8727 (or 8721 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 25683920 is about 5067.9305441176. The cubic root of 25683920 is about 295.0442143821.

The spelling of 25683920 in words is "twenty-five million, six hundred eighty-three thousand, nine hundred twenty".