25623668 has 36 divisors (see below), whose sum is σ = 52476480. Its totient is φ = 10915632.

The previous prime is 25623667. The next prime is 25623673. The reversal of 25623668 is 86632652.

25623668 is nontrivially palindromic in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25623667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46571 + ... + 47117.

It is an arithmetic number, because the mean of its divisors is an integer number (1457680).

Almost surely, 2^25623668 is an apocalyptic number.

25623668 is a gapful number since it is divisible by the number (28) 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 25623668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26238240).

25623668 is an abundant number, since it is smaller than the sum of its proper divisors (26852812).

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

25623668 is a wasteful number, since it uses less digits than its factorization.

25623668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804 (or 795 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 25623668 is about 5061.9826155371. The cubic root of 25623668 is about 294.8133186415.

The spelling of 25623668 in words is "twenty-five million, six hundred twenty-three thousand, six hundred sixty-eight".