25678587 has 16 divisors (see below), whose sum is σ = 38263680. Its totient is φ = 15182400.

The previous prime is 25678579. The next prime is 25678589. The reversal of 25678587 is 78587652.

It is not a de Polignac number, because 25678587 - 2³ = 25678579 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 (25678589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8137 + ... + 10842.

It is an arithmetic number, because the mean of its divisors is an integer number (2391480).

Almost surely, 2^25678587 is an apocalyptic number.

25678587 is a deficient number, since it is larger than the sum of its proper divisors (12585093).

25678587 is a wasteful number, since it uses less digits than its factorization.

25678587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19034.

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

The square root of 25678587 is about 5067.4043651558. The cubic root of 25678587 is about 295.0237920100.

The spelling of 25678587 in words is "twenty-five million, six hundred seventy-eight thousand, five hundred eighty-seven".