25680450 has 24 divisors (see below), whose sum is σ = 63687888. Its totient is φ = 6848080.

The previous prime is 25680427. The next prime is 25680469. The reversal of 25680450 is 5408652.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85452 + ... + 85751.

It is an arithmetic number, because the mean of its divisors is an integer number (2653662).

Almost surely, 2^25680450 is an apocalyptic number.

25680450 is an abundant number, since it is smaller than the sum of its proper divisors (38007438).

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

25680450 is a wasteful number, since it uses less digits than its factorization.

25680450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171218 (or 171213 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 25680450 is about 5067.5881837418. The cubic root of 25680450 is about 295.0309265671.

The spelling of 25680450 in words is "twenty-five million, six hundred eighty thousand, four hundred fifty".