25669280 has 192 divisors, whose sum is σ = 78236928. Its totient is φ = 7741440.

The previous prime is 25669261. The next prime is 25669289. The reversal of 25669280 is 8296652.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25669289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596939 + ... + 596981.

It is an arithmetic number, because the mean of its divisors is an integer number (407484).

Almost surely, 2^25669280 is an apocalyptic number.

25669280 is a gapful number since it is divisible by the number (20) 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 25669280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39118464).

25669280 is an abundant number, since it is smaller than the sum of its proper divisors (52567648).

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

25669280 is a wasteful number, since it uses less digits than its factorization.

25669280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 25669280 is about 5066.4859616898. The cubic root of 25669280 is about 294.9881446926.

The spelling of 25669280 in words is "twenty-five million, six hundred sixty-nine thousand, two hundred eighty".