25780834 has 16 divisors (see below), whose sum is σ = 40985280. Its totient is φ = 12128400.

The previous prime is 25780831. The next prime is 25780847. The reversal of 25780834 is 43808752.

It is a junction number, because it is equal to n+sod(n) for n = 25780793 and 25780802.

It is not an unprimeable number, because it can be changed into a prime (25780831) 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, 3492 + ... + 7984.

It is an arithmetic number, because the mean of its divisors is an integer number (2561580).

Almost surely, 2^25780834 is an apocalyptic number.

25780834 is a deficient number, since it is larger than the sum of its proper divisors (15204446).

25780834 is a wasteful number, since it uses less digits than its factorization.

25780834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 25780834 is about 5077.4830378840. The cubic root of 25780834 is about 295.4148486857.

The spelling of 25780834 in words is "twenty-five million, seven hundred eighty thousand, eight hundred thirty-four".