25782945 has 8 divisors (see below), whose sum is σ = 41252736. Its totient is φ = 13750896.

The previous prime is 25782919. The next prime is 25782947. The reversal of 25782945 is 54928752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25782945 - 2⁷ = 25782817 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 25782897 and 25782906.

It is not an unprimeable number, because it can be changed into a prime (25782947) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 859417 + ... + 859446.

It is an arithmetic number, because the mean of its divisors is an integer number (5156592).

Almost surely, 2^25782945 is an apocalyptic number.

It is an amenable number.

25782945 is a deficient number, since it is larger than the sum of its proper divisors (15469791).

25782945 is a wasteful number, since it uses less digits than its factorization.

25782945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718871.

The product of its digits is 201600, while the sum is 42.

The square root of 25782945 is about 5077.6909122159. The cubic root of 25782945 is about 295.4229115710.

The spelling of 25782945 in words is "twenty-five million, seven hundred eighty-two thousand, nine hundred forty-five".