25878567 has 32 divisors (see below), whose sum is σ = 40884480. Its totient is φ = 14353920.

The previous prime is 25878553. The next prime is 25878581. The reversal of 25878567 is 76587852.

It is an interprime number because it is at equal distance from previous prime (25878553) and next prime (25878581).

It is not a de Polignac number, because 25878567 - 2¹¹ = 25876519 is a prime.

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

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25873567) 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 31 ways as a sum of consecutive naturals, for example, 76623 + ... + 76959.

It is an arithmetic number, because the mean of its divisors is an integer number (1277640).

Almost surely, 2^25878567 is an apocalyptic number.

25878567 is a deficient number, since it is larger than the sum of its proper divisors (15005913).

25878567 is a wasteful number, since it uses less digits than its factorization.

25878567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

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

The square root of 25878567 is about 5087.0980922329. The cubic root of 25878567 is about 295.7876756798.

It can be divided in two parts, 258785 and 67, that added together give a palindrome (258852).

The spelling of 25878567 in words is "twenty-five million, eight hundred seventy-eight thousand, five hundred sixty-seven".