25780835 has 8 divisors (see below), whose sum is σ = 31002000. Its totient is φ = 20581344.

The previous prime is 25780831. The next prime is 25780847. The reversal of 25780835 is 53808752.

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

It is a cyclic number.

It is not a de Polignac number, because 25780835 - 2² = 25780831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25780831) 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, 2672 + ... + 7661.

It is an arithmetic number, because the mean of its divisors is an integer number (3875250).

Almost surely, 2^25780835 is an apocalyptic number.

25780835 is a deficient number, since it is larger than the sum of its proper divisors (5221165).

25780835 is a wasteful number, since it uses less digits than its factorization.

25780835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10837.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 25780835 is about 5077.4831363580. The cubic root of 25780835 is about 295.4148525052.

The spelling of 25780835 in words is "twenty-five million, seven hundred eighty thousand, eight hundred thirty-five".