25678785 has 32 divisors (see below), whose sum is σ = 47185920. Its totient is φ = 11793600.

The previous prime is 25678781. The next prime is 25678799. The reversal of 25678785 is 58787652.

25678785 = 8² + 9² + ... + 425².

It is not a de Polignac number, because 25678785 - 2² = 25678781 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (25678781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 961 + ... + 7230.

It is an arithmetic number, because the mean of its divisors is an integer number (1474560).

Almost surely, 2^25678785 is an apocalyptic number.

It is an amenable number.

25678785 is a deficient number, since it is larger than the sum of its proper divisors (21507135).

25678785 is a wasteful number, since it uses less digits than its factorization.

25678785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8229.

The product of its digits is 940800, while the sum is 48.

The square root of 25678785 is about 5067.4239017473. The cubic root of 25678785 is about 295.0245502885.

The spelling of 25678785 in words is "twenty-five million, six hundred seventy-eight thousand, seven hundred eighty-five".