25780259 has 8 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 25435336.

The previous prime is 25780241. The next prime is 25780277. The reversal of 25780259 is 95208752.

It is an interprime number because it is at equal distance from previous prime (25780241) and next prime (25780277).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25780259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25780229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51002 + ... + 51504.

It is an arithmetic number, because the mean of its divisors is an integer number (3265920).

Almost surely, 2^25780259 is an apocalyptic number.

25780259 is a deficient number, since it is larger than the sum of its proper divisors (347101).

25780259 is a wasteful number, since it uses less digits than its factorization.

25780259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 25780259 is about 5077.4264150256. The cubic root of 25780259 is about 295.4126524184.

The spelling of 25780259 in words is "twenty-five million, seven hundred eighty thousand, two hundred fifty-nine".