25782907 has 6 divisors (see below), whose sum is σ = 25959084. Its totient is φ = 25607880.

The previous prime is 25782893. The next prime is 25782919. The reversal of 25782907 is 70928752.

It is a de Polignac number, because none of the positive numbers 2^k-25782907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25782907.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32368 + ... + 33154.

It is an arithmetic number, because the mean of its divisors is an integer number (4326514).

Almost surely, 2^25782907 is an apocalyptic number.

25782907 is a deficient number, since it is larger than the sum of its proper divisors (176177).

25782907 is an frugal number, since it uses more digits than its factorization.

25782907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 25782907 is about 5077.6871703562. The cubic root of 25782907 is about 295.4227664353.

The spelling of 25782907 in words is "twenty-five million, seven hundred eighty-two thousand, nine hundred seven".