25782007 has 4 divisors (see below), whose sum is σ = 26478856. Its totient is φ = 25085160.

The previous prime is 25781999. The next prime is 25782019. The reversal of 25782007 is 70028752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25782007 - 2³ = 25781999 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 25782007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25782037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348369 + ... + 348442.

It is an arithmetic number, because the mean of its divisors is an integer number (6619714).

Almost surely, 2^25782007 is an apocalyptic number.

25782007 is a deficient number, since it is larger than the sum of its proper divisors (696849).

25782007 is an equidigital number, since it uses as much as digits as its factorization.

25782007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696848.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 25782007 is about 5077.5985465572. The cubic root of 25782007 is about 295.4193289695.

The spelling of 25782007 in words is "twenty-five million, seven hundred eighty-two thousand, seven".